scholarly journals Experimental Investigation of Condenser Shading Effects on Residential Air-Conditioning Unit Performance

2021 ◽  
Author(s):  
Maher Shehadi
Keyword(s):  
Experimental Investigation ◽  
Air Conditioning ◽  
Shading Effects ◽  
Residential Air Conditioning ◽  
Unit Performance

Experimental Investigation of Performance of a Residential Air Conditioning System with an Evaporatively Cooled Condenser

1993 ◽  
Vol 115 (4) ◽  
pp. 206-211 ◽  
Author(s):  
D. Y. Goswami ◽  
G. D. Mathur ◽  
S. M. Kulkarni
Keyword(s):  
Experimental Investigation ◽  
Air Conditioning ◽  
Energy Savings ◽  
Electric Energy ◽  
Water Source ◽  
Air Conditioning System ◽  
Evaporative Cooler ◽  
Residential Air Conditioning ◽  
The Cost ◽  
The University

This paper presents an experimental investigation of the use of indirect evaporative cooling process to increase the performance of an air-to-air vapor compression refrigeration system. The condenser of an existing 2.5 ton (8.8 kW) air conditioning system at the University of Florida’s Energy Park in Gainesville was retrofitted with a media pad type evaporative cooler, a water source, and a pump. The system performance was monitored without and with the evaporative cooler on the condenser. The data show that electric energy savings of 20 percent can be achieved by using an evaporatively cooled air condenser. The energy savings can pay for the cost associated with retrofitting the condenser in as little as two years.

scholarly journals Experimental investigation on the performance of residential air conditioning system using water condensate for subcooling

2018 ◽  
Vol 197 ◽  
pp. 08002
Author(s):  
Kasni Sumeru ◽  
Triaji Pangripto Pramudantoro ◽  
Andriyanto Setyawan
Keyword(s):  
Experimental Investigation ◽  
Power Consumption ◽  
Air Conditioning ◽  
Cooling Capacity ◽  
Working Fluid ◽  
Air Conditioning System ◽  
Residential Air Conditioning ◽  
Indoor And Outdoor

The experimental investigation of subcooling effects on system COP was carried out on a residential air conditioning using R410A as working fluid, with a compressor capacity of about 0.75 kW. In the experiment, the indoor and outdoor temperatures were controlled at 24°C and 32°C. The results showed that the use of condensate water lowers the refrigerant temperature in the condenser outlet by 2.7°C. By lowering the refrigerant temperature, the cooling capacity of the air conditioning can be enhanced. The decrease in of refrigerant temperature results in COP improvement 16.4%. Besides increasing the COP, the condensate water also decreases the discharge compressor temperature by 7.6°C. The decrease in of the discharge compressor temperature resulted in the decrease in power consumption of the air conditioning system by 5.9%.

Experimental investigation of oil retention in air conditioning systems

2005 ◽  
Vol 28 (7) ◽  
pp. 1018-1028 ◽  
Author(s):  
Lorenzo Cremaschi ◽  
Yunho Hwang ◽  
Reinhard Radermacher
Keyword(s):  
Experimental Investigation ◽  
Air Conditioning ◽  
Oil Retention ◽  
Air Conditioning Systems

scholarly journals Household accessibility to heat refuges: Residential air conditioning, public cooled space, and walkability

2016 ◽  
Vol 44 (6) ◽  
pp. 1036-1055 ◽  
Author(s):  
Andrew M Fraser ◽  
Mikhail V Chester ◽  
David Eisenman ◽  
David M Hondula ◽  
Stephanie S Pincetl ◽  
...  
Keyword(s):  
Los Angeles ◽  
Public Space ◽  
Urban Areas ◽  
Air Conditioning ◽  
Regional Climate ◽  
Heat Exposure ◽  
Household Level ◽  
Private And Public ◽  
Residential Air Conditioning ◽  
Walking Speeds

Access to air conditioned space is critical for protecting urban populations from the adverse effects of heat exposure. Yet there remains fairly limited knowledge of the penetration of private (home air conditioning) and distribution of public (cooling centers and commercial space) cooled space across cities. Furthermore, the deployment of government-sponsored cooling centers is likely to be inadequately informed with respect to the location of existing cooling resources (residential air conditioning and air conditioned public space), raising questions of the equitability of access to heat refuges. We explore the distribution of private and public cooling resources and access inequities at the household level in two major US urban areas: Los Angeles County, California and Maricopa County, Arizona (whose county seat is Phoenix). We evaluate the presence of in-home air conditioning and develop a walking-based accessibility measure to air conditioned public space using a combined cumulative opportunities-gravity approach. We find significant variations in the distribution of residential air conditioning across both regions which are largely attributable to building age and inter/intra-regional climate differences. There are also regional disparities in walkable access to public cooled space. At average walking speeds, we find that official cooling centers are only accessible to a small fraction of households (3% in Los Angeles, 2% in Maricopa) while a significantly higher number of households (80% in Los Angeles, 39% in Maricopa) have access to at least one other type of public cooling resource such as a library or commercial establishment. Aggregated to a neighborhood level, we find that there are areas within each region where access to cooled space (either public or private) is limited which may increase heat-related health risks.

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