Study of the test method for prediction of air conditioning equipment seasonal performance

Technical Report · Thu May 01 00:00:00 EDT 1980

DOI:https://doi.org/10.2172/5350441· OSTI ID:5350441

Thomas, S. B.

The test procedure, Method of Testing, Rating and Estimating the Seasonal Performance of Central Air-Conditioners and Heat Pumps Operating in the Cooling Mode, has been analyzed. The analysis of the test procedure incorporated two main functions: (1) to determine the validity of the test procedure; and (2) to determine if there are other alternate methods of obtaining the same results with less testing burden. Data were collected from industry and analyzed for any significant trends. Certain conclusions are drawn about the energy efficiency ratios, degradation coefficients and seasonal energy efficiency ratios. An error analysis was performed on the test procedure to determine the approximate amount of error when using this procedure. A semi-empirical model assuming a first order system response was developed to determine the factors that affect the part-load and cooling-load factors. The corresponding transient characteristics are then determined in terms of a single time constant. A thermostat demand cycle is used to determine the relationship between on-time and cycle-time. Recommendations are made regarding an alternate method being used to determine the seasonal energy efficiency ratio.

• Research Organization: Purdue Univ., West Lafayette, IN (United States)
• DOE Contract Number: AC02-80CS23337
• OSTI ID: 5350441
• Report Number(s): DOE/CS/23337-1
• Resource Relation: Other Information: Thesis
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
AIR CONDITIONERS
ENERGY EFFICIENCY
PERFORMANCE TESTING
HEAT PUMPS
COOLING
EXPERIMENTAL DATA
SEASONAL VARIATIONS
THERMOSTATS
CONTROL EQUIPMENT
DATA
EFFICIENCY
EQUIPMENT
INFORMATION
NUMERICAL DATA
TESTING
VARIATIONS
320100* - Energy Conservation
Consumption
& Utilization- Buildings