Connection of absorption heat pumps to multi-effect distillation systems: pilot test facility at the Plataforma Solar de Almería (Spain)

2010 ◽  
Vol 18 (1-3) ◽  
pp. 126-132 ◽  
Author(s):  
Diego C. Alarcón-Padilla ◽  
Lourdes García-Rodríguez ◽  
Julián Blanco-Gálvez
Keyword(s):  
Heat Pumps ◽  
Test Facility ◽  
Pilot Test

Pressure Testing of New 8” Pipeline Lateral With Air

2006 ◽  
Author(s):  
K. K. Botros ◽  
J. Geerligs ◽  
A. Glover ◽  
G. Nahas
Keyword(s):  
Air Temperature ◽  
Small Volume ◽  
Small Diameter ◽  
Area Ratio ◽  
Test Facility ◽  
Pilot Test ◽  
Test Results ◽  
Pressure Testing ◽  
Upper Limit ◽  
Simulated Test

A procedure for pressure testing of small diameter pipelines (up to NPS 12) using air has been developed based on pilot test results conducted on a controlled simulated test section of a small volume = 18.5 m3. This paper describes the simulated test facility and presents results of five simulated tests with different size pinhole leaks. A model describing leaks and effects of variation in air temperature has been developed, and together with the test results, a criteria for the upper limit of pipe volume to leak area ratio for implementation of air testing for various pipe sizes, has been arrived at. The procedure was then developed and utilized on a project approved by the Alberta Energy Utility Board. Results of this test on a new 12.2 km NPS 8 pipeline lateral in Alberta are also presented.

Development of an Outdoor Test Facility for Wind Convectors

1990 ◽  
Vol 112 (4) ◽  
pp. 287-292 ◽  
Author(s):  
P. F. Monaghan ◽  
D. P. Finn ◽  
P. H. Oosthuizen
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Performance ◽  
Heat Pumps ◽  
Test Facility ◽  
Transfer Performance ◽  
Test Results ◽  
Transfer Coefficients ◽  
Transfer Rates ◽  
Heat Transfer Coefficients ◽  
Outdoor Test

This paper deals with measurement of heat transfer performance of wind convectors, an alternative air source evaporator system for heat pumps. An automatically controlled and monitored outdoor wind convector test facility that is capable of measuring heat transfer rates and overall heat-transfer coefficients to within ± 5 percent measurement uncertainty for up to three wind convectors has been designed, built, and tested. Data on air temperature and humidity, solar radiation, and wind speed and direction are simultaneously collected. The choice of measurement technique for each variable and an error analysis for each sensor is discussed. Typical graphical test results are presented.

Wind Evaporator Heat Pumps—Part II: Thermal Performance Results

1992 ◽  
Vol 114 (4) ◽  
pp. 286-290
Author(s):  
J. M. O’Reilly ◽  
P. F. Monaghan
Keyword(s):  
Heat Pump ◽  
Weather Conditions ◽  
Heat Pumps ◽  
Coefficient Of Performance ◽  
Test Facility ◽  
Pump Performance ◽  
Wind Speeds ◽  
Testing Period ◽  
Low Wind Speeds ◽  
Compressor Power

Wind evaporators are alternative evaporators for air source heat pumps which rely on wind-driven or natural convection to move air across the heat transfer surfaces. A fully automatic, computer-controlled test facility which allows side-by-side testing of wind evaporator and conventional heat pumps and monitoring of weather conditions has been designed and built at University College Galway. The aim of this paper is to quantify the advantages of wind evaporators by comparing the performance of a wind evaporator heat pump with that of a conventional heat pump over an extended testing period and by examining the relationship between weather conditions and heat pump performance. In this paper, results are presented in the form of plots of coefficient of performance (COP), compressor power, evaporator and condenser heat transfers and climatic variables against time. In addition, a testing period coefficient of performance has been calculated for each heat pump. The results show that wind speed is the dominant climatic variable affecting wind evaporator heat pump performance, and that frost growth does not significantly reduce this performance. Even at extremely low wind speeds, the COP of the wind evaporator heat pump is not significantly affected. After over 460 hr of testing, the testing period COP of the wind evaporator heat pump shows a 16 percent increase over that of the conventional heat pump. (Refer to Nomenclature in Part I of this paper.)

Wind Evaporator Heat Pumps—Part I: Test Methods

1992 ◽  
Vol 114 (4) ◽  
pp. 281-285 ◽  
Author(s):  
P. F. Monaghan ◽  
D. P. Finn ◽  
J. M. O’Reilly
Keyword(s):  
Heat Transfer ◽  
Energy Efficient ◽  
Heat Transfer Performance ◽  
Field Performance ◽  
Weather Conditions ◽  
Heat Pumps ◽  
Test Methods ◽  
Finned Tube ◽  
Test Facility ◽  
Wide Range

Wind evaporators are alternative evaporators for air source heat pumps which rely on wind-driven or natural convection to move air across the heat transfer surfaces. It is believed that, in certain climates, wind evaporators can operate satisfactorily with frost on their surfaces for extended periods of time and defrost passively during switch-off periods. If so, an active defrost cycle would be unnecessary in these climates. Wind evaporators present an opportunity for heat pumps to be less expensive, more reliable, and more energy-efficient. However, the heat transfer performance of wind evaporators varies as a result of changes in a wide range of climatic variables. To determine the technical feasibility of wind evaporators, it is necessary to test complete wind evaporator heat pumps and to compare their monitored field performance over extended periods to that of conventional heat pumps with fan-assisted, finned-tube evaporators. In this paper, a test facility which allows side-by-side testing of wind evaporator and conventional heat pumps and monitoring of weather conditions is described. The choice of measurement technique for each variable is discussed and estimates of the measurement uncertainty for each sensor are made.

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