E-32025 DSM Evaluation Reports
39 passages
Program Measure Date an Early Replacement Baseline Calculation Approach Comes into Effect Date of LED Baseline Expected to Come into Effect for All Projects Fixtures N/A – midstream program June 30, 2026 BER-IR Lamps N/A – midstream progra...
AI summary The table outlines the dates for the implementation of baseline calculation approaches and LED baseline dates for various lighting programs in Nova Scotia, including midstream and new construction initiatives, with some dates subject to confirmation through a 2026 market study.
15.2.4 Interactive Effects In a home, interactive effects occur when the implementation of energy efficiency measures has an impact on the energy consumption of other elements such as heating and cooling. Since Green Heat high-efficiency h...
AI summary The text explains that interactive effects in home energy efficiency occur when measures impact heating/cooling consumption. Green Heat high-efficiency heating measures directly address these loads, so no additional interactive effects factors were applied in 2025, as their impact is already included in unitary savings calculations.
21.1 MHEEP Description MHEEP provides energy efficiency upgrades to homes in Mi'kmaw communities at no cost to participants or communities. E1 works with community housing managers (HMs), two delivery agents (DAs), and Mi'kmawpreferred con...
AI summary The Mi'kmaw Home Energy Efficiency Project (MHEEP) delivers free energy upgrades to Mi'kmaw communities in Nova Scotia through E1, community housing managers, delivery agents, and contractors. Funded by DSM and provincial sources, MHEEP aims for 0.548 GWh electrical savings and 0.156 MW peak demand reductions by 2025, including home assessments, insulation, heating upgrades, and moisture management measures.
3 Re trof it Impact Evaluation 12
AI summary The text references a retrofit impact evaluation, likely related to energy efficiency programs or building retrofits, though no further details are provided.
New Construction - •Technical and financial support to achieve electrical energy savings in new buildings and for major renovations in existing buildings, excluding savings from lighting systems. - •Participation begins at the preliminary...
AI summary The New Construction program offers technical and financial support for energy efficiency in new buildings and major renovations (excluding lighting), requiring participation from the preliminary design stage. Eligible facilities must be 15,000 sq ft or larger, achieve 25% total energy consumption reduction, and save at least 100,000 kWh in electricity.
Building Optimization (BOpt) - •Technical and financial support to help organizations conduct an investigation study with the objective of improving building operational efficiency. - •Technical and financial support for the implementation...
AI summary The Building Optimization (BOpt) program provides technical and financial support for investigating and implementing no-cost/low-cost energy efficiency measures in eligible facilities. Eligibility requires facilities to have a building automation system, annual consumption of 350,000 kWh or more, and not have been commissioned in the past two years.
Table 5: Implementation Status of Past Recommendations for Custom # Recommendations Status Comments 2024-New Construction-R6 For builders and energy modellers, the service should increase targeted outreach and educational activities relate...
AI summary The recommendation for targeted outreach and educational activities related to code shifts and their impacts on construction and energy efficiency was not recommended for action. E1 acknowledges the importance of such activities but notes that other organizations have already taken the lead, including sessions sponsored by the Department of Growth and Development with industry partners in March 2025.
6.2 Gross Savings Gross savings correspond to changes in energy consumption resulting from actions taken by Building Optimization participants compared to the consumption level had those actions not occurred. The following subsections desc...
AI summary Gross savings are calculated based on energy consumption changes from Building Optimization projects, using data from participants and E1, supplemented by engineering assumptions. The Evaluator applied best measurement and verification practices for commercial and industrial energy efficiency projects.
6.2.1 Project Review Findings The Evaluator reviewed all nine completed Building Optimization projects and made no adjustment to electrical energy or peak demand savings following these reviews. Therefore, the gross evaluated savings for e...
AI summary The Evaluator reviewed nine completed Building Optimization projects and found no adjustments needed for electrical energy or peak demand savings. Gross savings remain equal to E1's tracked figures, with totals derived by summing individual project savings.
B. Awareness and Participation B1. Without commenting on your participation in the Custom Retrofit program for now, why did your organization decide to complete the compressed air leak audit and repairs we are discussing today?
AI summary The proceeding inquires why an organization undertook a compressed air leak audit and repairs, seeking their rationale without referencing their participation in the Custom Retrofit program.
APPENDIX VI Retrofit, Pay-for-Performance and Building Optimization Project Review Protocols
AI summary Protocols for reviewing retrofit, pay-for-performance, and building optimization projects under Nova Scotia's regulatory framework, focusing on energy efficiency and performance standards.
Introduction – Telephone IDI I am with Narrative, and we are conducting an evaluation of the Efficiency Nova Scotia Custom New Construction program. This interview should take about 15-20 minutes. Is this still a good time for you? The pur...
AI summary Narrative is conducting an evaluation of Efficiency Nova Scotia's Custom New Construction program through telephone interviews. The purpose is to understand motivations for building energy-efficient structures exceeding code requirements, with confidentiality assured for participants' responses.
CAPTURE VERBATIM - 98. I am unsure - 99. I prefer not to say - I10. [SINGLE RESPONSE PER STATEMENT; DO NOT RANDOMIZE] Rate the influence of the following factors in your decision to build a better-than-code building. - a. The program finan...
AI summary The text presents a survey question assessing factors influencing decisions to build energy-efficient buildings, focusing on financial incentives, technical assistance, and non-technical information provided by Efficiency Nova Scotia staff. Respondents rate the importance of these factors on a 0-10 scale.
Introduction I am with _____ and we are performing an evaluation of the Custom New Construction program service offered by Efficiency Nova Scotia. This interview should take about 15-20 minutes. Is this still a good time for you? In this i...
AI summary The interview evaluates Efficiency Nova Scotia's Custom New Construction program, focusing on decisions to build energy-efficient buildings exceeding code requirements. Responses will be confidential and aggregated, with no impact on incentive amounts.
A. Identifying Key Decision-makers - A1. Were you directly involved in your organization's decision to build a better-than-code building? Were you a key decision-maker? - 1. Yes - 2. No - 98. Don't know - 99. Refused - A2. [IF A1=YES OR DK...
AI summary This section seeks to identify individuals or groups involved in decisions to construct buildings exceeding code standards. It asks respondents about their direct involvement, roles in decision-making, and whether others influenced the decision, requesting contact details for key stakeholders.
code. OR - 3. Designed a less efficient building that only met the minimum energy efficiency requirements of the building code. - 98. (Don't know) - 99. (Refused)
AI summary The text outlines a scenario where a building is designed to meet only the minimum energy efficiency requirements of the building code, potentially leading to free-ridership issues. Respondents indicated uncertainty or refusal to answer related questions.
APPENDIX X New Construction Energy Model Review Protocol
AI summary Appendix X outlines a protocol for reviewing energy models in new construction, likely part of a regulatory proceeding related to energy efficiency standards or building codes in Nova Scotia.
2 Envelope Review - Check envelope resistance value (wall/fenestration/roof/etc.) and validate with shop drawings and construction details. Make sure that effective R/RSI – U/USI values are used in the simulation. - Pay particular attentio...
AI summary The envelope review process emphasizes verifying insulation values (R/RSI and U/USI) against construction details, addressing curtain wall inefficiencies, ensuring fenestration-to-wall ratios comply with baseline allowances, and confirming code-specification adherence in simulations.
3 Parametrization and Zoning - For buildings with a repetitive storey pattern, if the "Copy" function is used, the modeller often forgets to check the "Over conditioned space" option, which may create an "exterior floor". - Verify the zoni...
AI summary The text highlights two issues in building parametrization: (1) modellers may overlook checking the 'Over conditioned space' option when using the 'Copy' function for repetitive storey patterns, risking incorrect 'exterior floor' creation, and (2) the necessity of verifying zoning accuracy.
4 Loads and Schedules - Validate occupancy and plug-load values according to NECB. - Validate lighting loads by spot-checking installed lighting power in random rooms vs. electrical plans and shop drawings. - Validate domestic hot water (D...
AI summary The text outlines procedures for validating occupancy, plug-load, lighting, and domestic hot water (DHW) loads in building models, referencing NECB and EfficiencyOne guidelines, and ensuring schedules align with typical building types.
5 HVAC Systems This section can be very complex, depending on the building modelled, so the following should be considered as general guidelines. Please refers to E1 White Paper - Baseline HVAC System in MURBs for MURBS - Validate that all...
AI summary This section outlines general guidelines for validating HVAC systems in multi-unit residential buildings (MURBs), emphasizing alignment with shop drawings, code specifications, operating sequences, energy efficiency measures, airflow matching, and addressing software modeling bugs.
8.2.2 Interactive Effects In a building, interactive effects occur when the implementation of energy efficiency products has an impact on the energy consumption of other elements such as heating and cooling. For the C&I Aggregator pathway,...
AI summary Interactive effects occur when energy efficiency products in buildings influence heating and cooling consumption. For the C&I Aggregator pathway, these effects are factored into demand response (DR) capacity calculations using whole-building meter data to account for overall consumption impacts.
Interactive Effects on Electrical Heating The Hydro-Québec study found that efficient lighting installed in electrically heated single-family homes without air conditioning results in an interactive effects factor for heating of -58%.
AI summary A Hydro-Québec study found that installing efficient lighting in electrically heated single-family homes without air conditioning creates a -58% interactive effects factor for heating, indicating reduced heating demand due to energy efficiency measures.
Interactive Effects on Air Conditioning The Hydro-Québec study found that efficient lighting installed in homes with air-conditioning units results in an interactive effects factor for cooling of 3.6%. By analyzing the Hydro-Québec study,...
AI summary The Hydro-Québec study found that efficient lighting in homes with air conditioning creates a 3.6% interactive cooling effect. The Evaluator adjusted this to 3.1% by updating COP values (from 2.5 to 2.9) to reflect improved air conditioner efficiency since the study, using a formula linking cooling energy savings to conditioned home area percentages.
Hot Water Insulation Measures For hot water insulation measures, namely pipe insulation and hot water tank wraps, the interactive effects factors are based on engineering calculations to account for the duration of the heating and cooling...
AI summary The text outlines methodology for calculating interactive effects of hot water insulation measures (pipe insulation and tank wraps), considering heating/cooling seasons, system efficiency, and heat generation within buildings. It notes differences in installation likelihood between single-family homes and apartments due to conditioned space assumptions.
Apartments Based on the assumption that DHW insulation measures are installed in conditioned spaces, a heating period of eight months was used as the average number of months during which heating interactive effects occur in an apartment....
AI summary The analysis assumes DHW insulation in apartments is installed in conditioned spaces, using an 8-month heating period and 2-month cooling period. COP values of 3.5 (heat pumps) and 2.9 (air conditioning) were applied to adjust interactive effects, aligning with Subsection 2.1.1 assumptions.
Summary [Table](#page-14-0) 30 presents a summary of the values used to calculate solar domestic hot water (DHW) savings. The detailed methodology follows.
AI summary Table 30 summarizes the values used to calculate solar domestic hot water (DHW) savings. The detailed methodology for these calculations is provided in the document.
(4) Wood and Pellet Stoves/Fireplace Inserts
AI summary This section introduces regulatory considerations for wood and pellet stoves/fireplace inserts, likely addressing efficiency standards, emissions, or program eligibility under Nova Scotia's energy policies.
(5) Wood and Pellet Boilers and Furnaces
AI summary This section of the regulatory proceeding addresses wood and pellet boilers and furnaces, likely examining their efficiency, program eligibility, or regulatory considerations within Nova Scotia's energy framework.
Table 144: Included Commercial Measures Eligible Measures Program Components Variable Frequency Drives (VFDs) VFD for non-HVAC Applications BER-AR, SBES Pool Pump ENERGY STAR® Pool Pumps BER-AR, SBES Solar Solar Photovoltaic Systems BER-AR...
AI summary Table 144 lists various eligible commercial measures and their corresponding program components, including technologies such as Variable Frequency Drives, Solar Photovoltaic Systems, and refrigeration improvements, associated with Building Energy Retrofit - Advanced Retrofit (BER-AR) and Semi-Prescriptive Building Efficiency Solution (SBES).
The following sections outline all necessary parameters to calculate gross electrical energy savings for BER-AR, BER-IR, SBES, and Custom Retrofit semi-prescriptive measures. Note that, while unitary peak demand savings are presented in W...
AI summary This section outlines the parameters required to calculate gross electrical energy savings for various building retrofit measures, including BER-AR, BER-IR, SBES, and Custom Retrofit semi-prescriptive measures. It notes a discrepancy between the units used in summary tables and those in detailed calculations.
Table 145: BER-AR and SBES Interactive Effects (IE) Factors for Non-recessed Indoor Lighting IE Energy IE Demand Building Type Heat Pump Electric Resistance Non-electric or No Heating Heat Electric Non electric Heating and Cooling Heating...
AI summary Table 145 presents interactive effects (IE) factors for non-recessed indoor lighting under BER-AR and SBES, showing energy and demand impacts across different building types and heating systems, with percentages indicating energy savings or increases.
For indoor lighting measures offered through the CDI Pilot, the interactive effects factors used for energy and peak demand savings are based on the average values of indoor lighting products installed through SBES in 2025. [Table](#page-1...
AI summary The text discusses the use of interactive effects factors for indoor lighting measures in the CDI Pilot, referencing average values from SBES installations in 2025 and a table summarizing these factors for BER-IR and the SBES CDI Pilot.
6.1.3 Adjustment Ratios The adjustment ratios in [Table](#page-127-1) 150 were established through the latest comprehensive impact evaluation for each program. They should be applied for all lighting measures in SBES and BER-AR, except for...
AI summary Adjustment ratios in Table 150 were established through the latest comprehensive impact evaluation for each program and should be applied for all lighting measures in SBES and BER-AR, except for LED roadway lighting measures.
(7) HVAC Hotel Occupancy Sensors
AI summary Section discussing HVAC Hotel Occupancy Sensors, likely related to energy efficiency in hotel buildings. Context includes regulatory proceedings and energy management topics in Nova Scotia.
Hot Water Insulation Measures For hot water insulation measures, namely pipe insulation and hot water tank wraps, the interactive effects factors are based on engineering calculations to account for the duration of the heating and cooling...
AI summary The document details engineering calculations for hot water insulation measures (pipe insulation and tank wraps), considering heating/cooling seasons, system efficiency, and heat loss. Assumptions include SBES resembling single-family homes and 10% heat loss from exterior walls. Adjustments for heat pump systems use COP values from Federal Energy Efficiency Regulations.
(1) Cooler Night Covers and Display Case Strip Curtains
AI summary The document section titled '(1) Cooler Night Covers and Display Case Strip Curtains' appears to focus on energy efficiency measures related to building components, though no further details are provided in the text.
(2) Dual and Natural Ventilation
AI summary The section titled '(2) Dual and Natural Ventilation' introduces a regulatory discussion on ventilation strategies, likely within the context of building efficiency or energy conservation frameworks in Nova Scotia.
(9) Demand Controlled Kitchen Exhaust
AI summary The section titled 'Demand Controlled Kitchen Exhaust' likely addresses energy efficiency measures for kitchen exhaust systems, potentially linking to Demand-Side Management (DSM) initiatives under Nova Scotia's regulatory framework. It may involve discussions on building efficiency and DSM programs.
E-8E1 (EE) RIRs 1-10
26 passages
V2 August 2022 Version Date Revisions v1 December 2020 Original version v2 August 2022 Revised incentives; new requirements for envelope calculations, mixed fuel systems, long term care facilities
AI summary The V2 August 2022 version updates the original December 2020 document with revised incentives and new requirements for envelope calculations, mixed fuel systems, and long-term care facilities. These changes reflect evolving regulatory standards for energy efficiency and building performance.
1.1. Program Objectives Efficiency Nova Scotia (ENS) offers a Custom New Construction (NC) Program that provides support for the design and construction of energy efficient commercial, industrial, institutional, and multi-unit residential...
AI summary Efficiency Nova Scotia's Custom New Construction Program aims to support energy-efficient design and implementation in new commercial, industrial, institutional, and multi-unit residential buildings through customized incentives based on expected electricity savings, with current focus on electrical energy savings.
7. Post-Construction - Energy modeler submits an as-built model reflecting any design changes during construction - ENS conducts a facility site visit to verify energy efficiency measures
AI summary Post-construction processes involve submitting an as-built energy model reflecting design changes and ENS conducting site visits to verify energy efficiency measures. These steps ensure compliance with energy efficiency standards and validate implementation of approved measures.
6.2. Envelope Thermal Bridging NECB 2017 requires that overall thermal transmittance (effective U value) calculations include the effects of thermal bridging from all assembly components outlined in section 3.1.1.7.(1). This includes, but...
AI summary NECB 2017 mandates inclusion of thermal bridging effects in envelope U-value calculations for new construction, specifying methods like the ENS Thermal Bridging Template or 3D modeling. References include BC Hydro’s guide and ASHRAE RP-1365, with a note on wood-framed buildings following NBC 2015 guidelines.
6.4. Specialized Facilities Modeling requirements for specialized facilities such as industrial plants, arenas/rinks, etc. must be reviewed and discussed with Efficiency NS before modeling starts.
AI summary Modeling requirements for specialized facilities such as industrial plants and arenas must be reviewed and discussed with Efficiency NS prior to modeling initiation to ensure appropriate alignment with regulatory standards.
6.5. Domestic Hot Water (DWH) Consumption and Load Reduction DHW consumption in MURBs must be modeled per the Energy Star Multifamily High-Rise Program (MFHR) Simulation Guidelines (Version 1.0, Revision 03) Section 3.9.2. DHW Consumption...
AI summary The section outlines guidelines for modeling domestic hot water (DHW) consumption in Multi-Unit Residential Buildings (MURBs) and other buildings using Energy Star and ASHRAE standards. Energy savings can be claimed through the use of low-flow fixtures and Energy Star appliances, with documentation available from ENS.
7.1. General Requirements The baseline (reference) building must adhere to the requirements of NECB Part 8 and/or the guidelines in this document. Exceptions to NECB and the NC guidelines will be considered on a case-by-case basis and must...
AI summary The baseline building must comply with NECB Part 8 or document guidelines, with exceptions requiring ENS approval. Project-specific baselines must be confirmed with ENS before energy modeling. HVAC system guidelines for MURBs and NECB baseline systems are detailed in sections 7.7 and 7.9.
7.3.1. Baseline U values The baseline building shall be modeled with U values equal to the prescriptive requirements outlined in NECB 2017 3.2.
AI summary The baseline building is required to be modeled with U values equal to the prescriptive requirements outlined in NECB 2017 3.2.
7.4.1. Proposed HVAC System includes Heat Pump equipment: Per NECB Part 8, for any thermal zone in the proposed building that is heated by an air-, ground-, or water-source heat pump (excluding water loop heat pumps served by a boiler and...
AI summary The proposed HVAC system includes heat pump equipment, which must comply with NECB Part 8. Specific requirements for baseline building heat pumps, ventilation systems, and fan power for mini-split heat pumps are outlined in the text.
7.4.2. Proposed HVAC System does not include Heat Pump equipment: When the proposed building does not use heat pump equipment, the reference HVAC system is determined from Table 8.4.4.7. Baseline Energy Recovery must be included if require...
AI summary The proposed HVAC system does not include heat pump equipment, and the reference HVAC system is determined from Table 8.4.4.7. Baseline Energy Recovery must be included if required by NECB 5.2.10.
Fan Power Cutsheet efficiency 40% 8.4.4.18. 640 Pa; Combined fan and motor Cooling Type Central water to water heat pump Air cooled direct expansion Cooling Efficiency Cutsheet Table 5.2.12-SPVAC & SPVHP in Cooling mode Heating Type Centra...
AI summary The text presents a table comparing various heating and cooling system specifications, including fan power, cooling and heating types, efficiency metrics, and heat rejection details. It includes references to specific code sections and efficiency standards.
7.7.3. Distributed Water Loop Pumps with boiler/cooling tower The baseline for buildings with water loop heat pumps (water to air or water to water heat pumps) will be unitary air conditioners and baseboard heating. If the proposed buildin...
AI summary The baseline for buildings with water loop heat pumps is set as unitary air conditioners and baseboard heating. If fuel-fired heating is included in the water loop, the baseline will be fuel-fired hydronic heating with identical setpoints and operating schedules.
7.7.5. Air Cooled Variable Refrigerant Flow Systems The Baseline for a proposed Air Cooled Variable Refrigerant Flow (VRF) system, in buildings located in an area where natural gas is available (as confirmed by ENS), shall be modeled with...
AI summary The baseline for air cooled variable refrigerant flow systems in buildings with available natural gas must follow ASHRAE 90.1 2013 and NECB 2017 performance standards, including a minimum operating temperature of -18°C.
7.8. Ventilation Baseline for MURBs/hotels Ventilation in MURBs or hotels is typically provided by either a central fresh air system or suitelevel HRVs. NECB requires the baseline ventilation system configuration for MURBs to be identical...
AI summary The section outlines the ventilation baseline requirements for MURBs and hotels, specifying that the baseline system configuration must match the proposed system as per NECB standards. It details the two common ventilation system types: central fresh air systems and suite-level HRVs.
7.8.1. Single-zone HRVs System Description Proposed System Details Baseline System Details Ventilation System Type Single-zone (suite) HRVs Direct to zone or supplying fresh air to zone terminal systems Zone supply fan and exhaust fan Conf...
AI summary This section describes the details of single-zone heat recovery ventilation (HRV) systems, comparing the proposed system with the baseline system in terms of ventilation type, heat recovery, fan power, and fan operation.
1. Configuration identical: if the proposed building uses suite HRVs that deliver fresh air directly to the zone through dedicated ductwork, the baseline building's ventilation system configuration will be identical. If the proposed buildi...
AI summary The text discusses the configuration of ventilation systems in proposed and baseline buildings, specifically focusing on the use of suite HRVs and their impact on ductwork and heating/cooling equipment configurations.
7.8.2. Central Ventilation Systems System Description Proposed System Details Baseline System Details Ventilation System Type Central DOAS Direct to zone or supplying fresh air to zone terminal systems Central DOAS Configuration identical...
AI summary The document compares proposed and baseline central ventilation systems, focusing on system type, heat recovery, fan power, and operation. The proposed system is a Direct Outside Air System (DOAS) with continuous fan operation, while the baseline system adheres to the National Energy Code of Canada for Buildings (NECB) 2017 for heat recovery.
System Baseline System Type 3 Description Fuel-fired Heating in Proposed Electric Heating in Proposed System Type System-3-Single-zone packaged rooftop unit with baseboard heating System-3-Single-zone packaged rooftop unit with baseboard h...
AI summary The text presents a comparison of two heating systems: fuel-fired heating and electric heating, focusing on system type, central plant, fan control, cooling and heating efficiency, and other technical specifications. It references the National Energy Code of Canada for Buildings (NECB) and includes details on fan power, heating and cooling types, and system descriptions.
System Description Baseline System Type 5 System Type System-5-Two-pipe fan-coil Central Plant Water cooling water chiller Fan Control Constant-Volume Fan Power 8.4.4.18. 640 Pa; Combined fan and motor efficiency 40% Cooling Type Water coo...
AI summary The document describes a baseline System Type 5, which is a two-pipe fan-coil system with a water cooling water chiller, constant-volume fan control, and cooling towers for heat rejection. It outlines specifications such as fan power, cooling efficiency, and references standards like the NECB 2017 for DHW systems.
System Baseline System Type 6 Description Fuel-fired Heating in Proposed Electric Heating in Proposed System Type System-6-Multi-zone built-up system with baseboard heating System-6-Multi-zone built-up system with baseboard heating Central...
AI summary The text presents a comparison between two heating systems: fuel-fired heating and electric heating, detailing aspects such as system type, central plant, fan control, cooling type, heating type, and efficiency standards. It references the National Energy Code of Canada for Buildings (NECB) and includes technical specifications for fan power and cooling efficiency.
7.10. Baseline Requirements for Industrial Process Loads The baseline requirements for new industrial buildings pursuing energy-efficient process equipment are as follows: - Systems regulated by the NECB shall be modeled according to NECB...
AI summary The baseline requirements for industrial process loads in new industrial buildings are outlined, including modeling systems regulated by the NECB and unregulated process loads. Specific guidelines for equipment specifications, operating cycle times, and data sources are provided to ensure consistency and accuracy in modeling.
8.1. Effective Thermal Resistance If the building is modeled in eQuest/CANQuest and has a heavyweight construction, the effective thermal resistance must be entered using the Layers method. The U Value keyword method is acceptable for asse...
AI summary The document discusses the method for entering effective thermal resistance in building models, specifying that the Layers method should be used for heavyweight construction, while the U Value keyword method is acceptable for lightweight construction.
8.4.1. Central DOAS in Proposed, Decoupled from Zone Equipment If the proposed building has one or more multi-zone fresh air systems, the modeled ventilation system must match its configuration; i.e. each separate system in the design must...
AI summary The text discusses modeling requirements for central DOAS in multi-zone ventilation systems, emphasizing the need for dummy zones and preconditioning when the DOAS is decoupled from zone equipment. It outlines two modeling options for such systems.
8.4.2. Central DOAS in Proposed Building, Coupled to Zone Equipment If the proposed DOAS provides outside air via terminal equipment, the dummy zone DOAS must be modeled as follows: 1. DOAS without heating/cooling equipment If the DOAS pro...
AI summary This section outlines the modeling requirements for a central Dedicated Outdoor Air System (DOAS) in a proposed building, depending on whether it includes heating/cooling equipment. It provides specific configuration instructions for dummy zones and equipment to ensure accurate system simulation.
8.4.3. Single-zone HRVs in Proposed Building (MURBs) If the proposed building's fresh air system is comprised of suite-level HRVs, the modeled ventilation system can be a single dummy zone DOAS. The supply flow must still be the sum of all...
AI summary The text outlines guidelines for modeling single-zone heat recovery ventilators (HRVs) in multi-unit residential buildings (MURBs), specifying that a single dummy zone DOAS can be used if the fresh air system consists of suite-level HRVs. It details requirements for matching supply flow, fan power, and system modeling settings.
2. Heat Recovery in Coupled Ventilation Systems In buildings where the DOAS supplies fresh air via terminal equipment, and is equipped with heat recovery on the exhaust stream, an adjustment must be implemented to ensure the exhaust air te...
AI summary The text provides guidance on modeling heat recovery in coupled ventilation systems using eQuest, including adjustments for exhaust air temperature and preheat settings depending on whether the DOAS has heating equipment or not.