ASHRAE-90.1-2022- - Page 384
Extracted Content
L3.1 Calculation of the TSPR. The simulation program shall calculate both the TSPRp and TSPRr based only on the input for the proposed design and the requirements of this appendix. The calculation procedure shall not allow the user to directly modify either the building component characteristics of the TSPR refer- ence building design or the HVAC parameters identified as fixed input in Table L2.2.3.
L3.2 TSPR Simulation Program. All components of the proposed design for blocks served by HVAC sys- tems using this method shall be explicitly modeled by the simulation program . The code official shall be permitted to approve a simulation program for a specified application or limited scope.
L3.2.1 Minimum Capability. The simulation program shall be approved by the code official and shall, at a minimum, have the ability to explicitly model all of the following:
a. 8760 hours per year b. Hourly variations in occupancy, lighting power, miscellaneous equipment power, thermostat set points,
and HVAC system operation, defined separately for each day of the week and holidays c. Thermal mass effects d. Ten or more thermal blocks e. Part-load performance curves or other part-load adjustment methods for mechanical equipment f. Capacity and efficiency correction curves or other part-load adjustment methods for mechanical heating and mechanical cooling equipment g. Air economizers with integrated controls h. The energy use of all HVAC system types included in the analysis and energy impact from all related
fixed and user inputs in Table L2.2.3 i. Ability to automatically generate the TSPR reference building design as specified in Section L4.3
Informative Note: The simulation program shall include clear prompts or accessible help-topic references defining specific parameters and units for all required building and system characteristic inputs.
L3.2.2 TSPR Determination. The simulation program shall have the ability to either directly determine the TSPRp and TSPRr or produce hourly and annual reports of energy use by each energy source suitable for determining the TSPRp and TSPRr using a separate calculation.
L3.2.3 Load Calculations. The simulation program shall be capable of performing design load calculations to determine required HVAC equipment capacities and air and water flow rates in accordance with Section 6.4.2.1 for both the proposed design and TSPR reference building design .
L3.2.4 Testing
L3.2.4.1 The simulation program shall be tested according to ASHRAE Standard 140, except for Sections 7 and 8 of Standard 140. The required tests shall include building thermal envelope and fabric load tests (Sections 5.2.1, 5.2.2, and 5.2.3), ground coupled slab-on- grade analytical verification tests (Section 5.2.4), space -cooling equipment performance tests (Section 5.3), space -heating equipment performance tests (Section 5.4), and air-side HVAC equipment analytical verification tests (Section 5.5) along with the associated reporting (Section 6).
L3.2.4.2 The test results and modeler reports shall be posted on a publicly available website and shall include the test results of the simulation program and input files used for generating the results along with the results of the other simulation programs included in ASHRAE Standard 140, Annexes B8 and B16. The modeler report in Standard 140, Annex A2, Attachment A2.7 shall be completed for results exceeding the maximum or falling below the minimum of the reference values and for omitted results.
Informative Notes:
- There are no pass/fail criteria established by this testing requirement.
- Based on the Section 3.2 definition, simulation program includes the simulation engine and the corresponding user interface. The testing of a simulation program only meets the requirements of Section L1 for that simulation program and cannot be used as proxy for documenting compliance of another simulation program that uses the same simulation engine.
L3.3 Climatic Data. Climatic data shall meet the requirements of Section G2.3.
L3.4 Compliance Report. The simulation program shall generate a report that includes the following:
a. Address of the building b. Name of individual completing the compliance report c. Name and version of the compliance simulation program, the edition of Standard 90.1 the simulation
program method complies with, and the link to the website that contains the ASHRAE Standard 140 testing results for the version used in accordance with Section L3.2.4 d. The dimensions, story heights, and number of stories for each block
382 ANSI/ASHRAE/IES Standard 90.1-2022 (I-P)