In 1994, ASHRAE began developing a guideline for measuring retrofit savings (GPC-14P). In support ofGuide­ line-14p, ASHRAE initiated RP-1050 to develop a toolkit for calculating linear, change-point linear, and multiple-linear inverse building energy models. The resulting Inverse Model­ ing Toolkit (IMT) can be usedaspart ofaprocedure to measure savings. This paper describes the numerical algo...

A set of enhancements to the ASHRAE Handbook [1] are presented to demonstrate the effectiveness of multimedia and advanced presentation techniques such as 3D computer graphics, visualization and animation techniques. These results can also serve as a model and guide for the broader use of these techniques in other ASHRAE publications. 1 General Introduction to Project In this paper, we present ...

The purpose of ventilation is to dilute or remove indoor contaminants that an occupant could be exposed to. It can be provided by mechanical or natural means. ASHRAE Standards including standards 62, 119, and 136 have all considered the contribution of infiltration in various ways, using methods and data from 20 years ago. The vast majority of homes in the United States and indeed the world are...

This paper presents generic equipment models that capture the performance of families of similar heat pumps equipment and that can be used in building simulation programs. Mapping has been carried out for families of single and dual compressor speed ducted split systems and the correlations are being implemented as components for building simulation. The units mapped ranged in nominal capacity ...

a This proceedings paper presents a summary of results. For more detailed information, the reader is referred to the peer-reviewed publications to be published in ASHRAE Transactions, June 2010. b

The recent ASHRAE project, “Updating the ASHRAE/ ACCA Residential Heating and Cooling Load Calculation Procedures and Data” (RP-1199), developed two new residential loads calculation procedures: residential heat balance (RHB), a detailed heat balance method that requires computer implementation, and residential load factor (RLF), a simplified procedure that is hand tractable and suitable for sp...

Office workers' preferences for air movement have been extracted from a database of indoor environmental quality surveys performed in over 200 buildings. Dissatisfaction with the amount of air motion is very common, with too little air movement cited far more commonly than too much air movement. Workers were also surveyed in a detailed two-season study of a single naturally ventilated building....

Field experiments, conducted in 29 air-conditioned offices, used survey questionnaires and physical measurements to investigate workers’ subjective thermal responses and comfort perception. A total of 650 individuals participated in the field study. The thermal neutrality and thermal preference of subjects occurred at 25.6°C and 24.1°C respectively. Responses from those subjects suggest a comfo...

This paper suggests a method how to predict electric lighting energy savings for photocell controls in daylit spaces taking manual blind control into account. The method predicts lower but supposedly more “realistic” lighting energy savings than conventional simulation approaches. On the other hand, predicted savings are larger than those predicted by ASHRAE 90.1 power adjustment factors. The m...

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