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ASHRAE 140 2011

ASHRAE 140 2011

$60.67

ASHRAE Standard 140-2011 Standard Method of Test for the Evaluation of Building Energy Analysis Computer Programs

Published By Publication Date Number of Pages
ASHRAE 2011 276
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This standard specifies test procedures for evaluating the technical capabilities and ranges of applicability of computer programs that calculate the thermal performance of buildings and their HVAC systems. This Standard Method of Test can be used for identifying and diagnosing predictive differences from whole building energy simulation software that may possibly be caused by algorithmic differences, modeling limitations, input differences, or coding errors. The current set of tests included herein consists of 1) comparative tests that focus on building thermal envelope and fabric loads and mechanical equipment performance and 2) analytical verification tests that focus on mechanical equipment performance. This procedure tests software over a broad range of parametric interactions and for a number of different output types, thus minimizing the concealment of algorithmic differences by compensating errors. Different building energy simulation programs, representing different degrees of modeling complexity, can be tested. However, some of the tests may be incompatible with some building energy simulation programs.

PDF Catalog

PDF Pages PDF Title
1 ANSI/ASHRAE Standard 140-2011
9 1. PURPOSE
2. SCOPE
3. Definitions, Abbreviations, and Acronyms
3.1 Terms Defined for This Standard
12 3.2 Abbreviations and Acronyms Used in This Standard
14 4. Methods of Testing
4.1 General. The test procedures shall be applied as specified in normative Sections 5 through 8. Content of the normative sections and organization of the test procedures are described in Sections 4.1.1. and 4.1.2 below, and in greater detail in inf…
4.2 Applicability of Test Method. The method of test is provided for analyzing and diagnosing building energy simulation software using software-to-software, software-to-analytical-solution, and software-to-quasi-analytical-solution comparisons. The …
4.3 Organization of Test Cases. The specifications for determining test case configurations and input values are provided on a case-by-case basis in Section 5 and Section 7. The test cases are divided into two separate test classes to satisfy various…
16 4.4 Comparing Output to Other Results. For Class I test procedures, Annex B8 gives example simulation results for the building thermal envelope and fabric load tests, and Annex B16 gives quasi-analytical solution results and example simulation result…
17 5. CLASS I Test Procedures
5.1 Modeling Approach. This modeling approach shall apply to all the test cases presented in Sections 5.2, 5.3, and 5.4.
18 5.2 Input Specifications for Building Thermal Envelope and Fabric Load Tests
32 5.3 Input Specification for Space-Cooling Equipment Performance Tests
69 5.4 Input Specification for Space-Heating Equipment Performance Tests. Cases HE100 through HE230 shall be modeled as specified in this section and its subsections.
75 6. CLASS I Output Requirements
6.1 Reporting Results
6.2 Output Requirements for Building Thermal Envelope and Fabric Load Tests of Section 5.2. Required output shall be as specified in the sections below.
76 6.3 Output Requirements for Space-Cooling Equipment Performance Tests of Section 5.3. Required output shall be as specified in the sections below. See Section 3 for definitions of terms used below.
78 6.4 Output Requirements for Space-Heating Equipment Performance Tests of Section 5.4. The values listed below shall be provided and entered into the appropriate standard output report; see Sec5-4out.xls included with the accompanying electronic media…
79 7. Class II Test Procedures
7.1 Modeling Approach. This modeling approach shall apply to all the test cases presented in Section 7.2.
7.2 Input Specifications. The test cases shall be modeled as specified in this section.
154 8. Class II Output Requirements
8.1 Reporting Results
8.2 Output Requirements for Building Thermal Envelope and Fabric Load Tests of Section 7.2. All results shall be entered into the appropriate standard output report (see Annex A2) as specified below.
156 Normative Annex A1—Weather Data
171 Normative Annex A2—Standard Output Reports
179 Informative Annex B1—Tabular Summary of Test Cases
187 Informative Annex B2—About Typical Meteorological Year (TMY) Weather Data
188 Informative Annex B3—Infiltration and Fan Adjustments for Altitude
190 Informative Annex B4—Exterior Combined Radiative and Convective Surface Coefficients
191 Informative Annex B5—Infrared Portion of Film Coefficients
193 Informative Annex B6—Incident Angle-Dependent Window Optical Property Calculations
196 Informative Annex B7—Detailed Calculation of Solar Fractions
201 Informative Annex B8—Example Results for Building Thermal Envelope and Fabric Load Tests of Section 5.2
205 Informative Annex B9—Diagnosing the Results Using the Flow Diagrams
212 Informative Annex B10—Instructions for Working with Results Spreadsheets Provided with the Standard
217 Informative Annex B11—Production of Example Results for Building Thermal Envelope and Fabric Load Tests of Section 5.2
220 Informative Annex B12—Temperature BIN Conversion Program
221 Informative Annex B13—COP Degradation Factor (CDF) as a Function of Part-Load Ratio (PLR)
224 Informative Annex B14—Cooling Coil Bypass Factor
227 Informative Annex B15—Indoor Fan Data Equivalence
228 Informative Annex B16—Analytical and Quasi-Analytical Solution Results and Example Simulation Results for HVAC Equipment Performance Tests of Sections 5.3 and 5.4
236 Informative Annex B17—Production of Quasi-Analytical Solution Results and Example Simulation Results for HVAC Equipment Performance Tests of Sections 5.3 and 5.4
247 Informative Annex B18—Alternative Section 7 Ground Coupling Analysis Case Descriptions for Developing Additional Example Results for Cases L302B, L304B, L322B, and L324B
251 Informative Annex B19—Distribution of Solar Radiation in the Section 7 Passive Solar Base Case (P100A)
253 Informative Annex B20—Example Results for Section 7 Test Procedures
257 Informative Annex B21—Production of Example Results for Section 7 Test Procedures
258 Informative Annex B22—Example Procedures for Developing Acceptance-Range Criteria for Section 7 Test Cases
261 Informative Annex B23—Validation Methodologies and Other Research Relevant to Standard 140
268 Informative Annex B24—Informative References
272 Informative Annex C—Addenda Description Information

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ASHRAE 140 2011
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