scholarly journals Cost and Performance Goals for Commercial Active Solar Absorption Cooling Systems

1985 ◽  
Vol 107 (2) ◽  
pp. 136-140 ◽  
Author(s):  
M. L. Warren ◽  
M. Wahlig
Keyword(s):  
Performance Analysis ◽  
Solar System ◽  
Thermal Performance ◽  
Return On Investment ◽  
Simulation Analysis ◽  
Cooling System ◽  
Cooling Systems ◽  
System Cost ◽  
Solar Cooling ◽  
Absorption Cooling

Economic and thermal performance analysis is used to determine cost goals for typical commercial active solar cooling systems to be installed between the years 1986 and 2000. Market penetration for heating, ventilating, and air conditioning systems depends on payback period, which is related to the expected return on investment. Postulating a market share for solar cooling systems increasing to 20 percent by the year 2000, payback and return on investment goals as a function of year of purchase are established. The incremental solar system cost goals must be equal to or less than the 20-year percent value of future energy savings, based on thermal performance analysis, at the desired return on investment. The methodology is applied to determine the allowable incremental solar system cost for commercial-scale, 25-ton absorption cooling systems based on the thermal performance predicted by recent simulation analysis, Methods for achieving these cost goals and expected solar cooling system costs will be discussed.

Methodology to Determine Cost and Performance Goals for Active Solar Cooling Systems

1983 ◽  
Vol 105 (2) ◽  
pp. 217-223
Author(s):  
M. L. Warren ◽  
M. Wahlig
Keyword(s):  
Thermal Performance ◽  
Return On Investment ◽  
Energy Savings ◽  
Cooling System ◽  
Cooling Systems ◽  
Solar Cooling ◽  
And Performance ◽  
Air Conditioning Systems ◽  
Solar Cooling System ◽  
Year 2000

Economic and thermal performance analyses of typical residential and commercial active solar cooling systems are used to determine cost goals for systems to be installed between the years 1986 and 2000. Market penetration for heating, ventilating, and air conditioning systems depends on payback period, which is related to the expected real return on investment. Postulating a market share for solar cooling systems increasing to 20 percent by the year 2000, payback and return on onvestment goals as a function of year of purchase are established. The incremental solar system cost goal must be equal to or less than the 20-year present value of future energy savings, based on thermal performance analysis, at the desired return on investment. Methods for achieving these cost goals and expected solar cooling system costs will be discussed.

Dry and Wet-Peaking Tower Cooling Systems For Power Plant Application

1976 ◽  
Vol 98 (3) ◽  
pp. 335-346
Author(s):  
M. W. Larinoff ◽  
L. L. Forster
Keyword(s):  
Power Plant ◽  
Performance Analysis ◽  
Thermal Performance ◽  
Heat Sink ◽  
Cooling Tower ◽  
Cooling System ◽  
Water Requirements ◽  
Surface Type ◽  
Makeup Water ◽  
Cooling Systems

A new concept of power plant heat-sink system is presented which employs the combination of a conventional wet-tower and a conventional dry-tower. The purpose of this cooling system is to reduce wet cooling-tower makeup-water requirements in water-short areas. The dry tower operates all year around while the wet-peaking tower is used only above certain ambient dry-bulb temperatures. The two cooling circuits serve separate sections of a conventional, surface-type, steam condenser. Thermal performance analysis is presented for various combinations of cooling systems ranging from 100 percent wet to 100 percent dry. Annual makeup-water requirements are calculated for various sizes of towers located in 18 selected cities of the U.S.A. ranging from north to south and east to west.

Analytical modeling of a radiant cooling system for thermal performance analysis

2021 ◽  
Author(s):  
Arup Chandra Saha ◽  
Vikas Verma ◽  
Rahul Tarodiya ◽  
M.R. Mahboob ◽  
Rajesh Kumar
Keyword(s):  
Performance Analysis ◽  
Thermal Performance ◽  
Analytical Modeling ◽  
Cooling System ◽  
Radiant Cooling

A gas-atomized spray cooling system integrated with an ejector loop: Ejector modeling and thermal performance analysis

2019 ◽  
Vol 180 ◽  
pp. 106-118 ◽  
Author(s):  
Ji-Xiang Wang ◽  
Yun-Ze Li ◽  
Jia-Xin Li ◽  
Chao Li ◽  
Yi Zhang ◽  
...  
Keyword(s):  
Performance Analysis ◽  
Thermal Performance ◽  
Cooling System ◽  
Spray Cooling

Performance Analysis With Future Predictions of Different Solar Cooling Systems in Guayaquil, Ecuador

2014 ◽  
Author(s):  
Carlos Naranjo-Mendoza ◽  
Jesús López-Villada ◽  
Gabriel Gaona ◽  
Jerko Labus
Keyword(s):  
Flow Rate ◽  
Cooling System ◽  
Meteorological Data ◽  
Cooling Systems ◽  
Great Opportunity ◽  
Constant Flow Rate ◽  
Solar Cooling ◽  
Average Annual Temperature ◽  
System Configurations

This paper presents a comparative analysis of three different solar cooling system configurations developed for a case study building in Guayaquil, Ecuador. Guayaquil is a city located at the Ecuadorian coast with an average annual temperature of 25°C. The city’s need for air conditioning throughout the year and the relatively intense solar radiation provide a great opportunity for implementation of solar cooling systems. The first cooling system includes a 175 kWc single-effect absorption chiller powered by evacuated tubes solar thermal collectors. This system was compared with two 140 kWc compression chiller systems (air-cooled (AC) and water-cooled (WC)) powered by grid-connected photovoltaics. Both constant flow rate (CFR) and variable flow rate (VFR) of chilled water were analyzed. The three systems have to satisfy a cooling demand of the top floor in one governmental building (app. 1296 m2) which was selected as case study. Additionally, two 140 kWc conventional compression chiller systems (AC and WC) were included in the comparison as reference systems. Cooling demand of the building was simulated in EnergyPlus and coupled with the appropriate system configurations developed in TRNSYS. The weather file (TMY) was developed based on real meteorological data collected in the last decade. The present analysis was extended with the prediction scenarios for the years 2020, 2050 and 2080 using climate change adapted weather files.

Exergy Analysis of a Combined Gas Turbine and Organic Rankine Cycle Based Power and Absorption Cooling Systems

2019 ◽  
Author(s):  
Joy Nondy ◽  
Tapan Kr. Gogoi
Keyword(s):  
Gas Turbine ◽  
Exergy Analysis ◽  
Cooling System ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Energy Output ◽  
Steam Turbines ◽  
Cooling Systems ◽  
Economic Point ◽  
Absorption Cooling

Abstract In this paper, a combined power and cooling system is thermodynamically analyzed. The system consists of a natural gas-fired gas turbine (GT) plant integrated with a heat recovery steam generator (HRSG), two steam turbines (STs), one organic Rankine cycle (ORC) and two absorption cooling systems (ACSs). With certain given input parameters, the GT plant produces net power of 36.06 MW, the two STs contribute 17.07 MW while from the ORC, 7.18 MW of net power was obtained. From the steam-operated ACS-I, a net 10.36 MW of cooing could be produced. Again, from the GT exhaust operated ACS-II, it was possible to generate additional 3.37 MW of cooling. From exergy analysis, it was found that the total irreversibility was the highest in the GT cycle with a net contribution of 180.412 MW followed by 4.178 MW from the HRSG, 3.561 MW from the ORC, 1.743 MW from ACS-I, 1.186 MW from ST-I, 0.812 MW from ACS-II, 0.175 MW from ST-II. The exergy efficiencies of the GT cycle, ORC, ACS-I and ACS-II were found 22.00%, 65.48%, 18.95% and 14.4% respectively. Regarding the power and cooling output, it can be concluded that these results are specific to the selected operating parameters. Further investigation is required, where, other similar configurations may be considered to make a final comment on the suitability of the proposed configuration from energy output and economic point of view.

scholarly journals Thermal performance evaluation of a high-density data centre for cooling system under fault conditions

2019 ◽  
Vol 111 ◽  
pp. 01043
Author(s):  
Jinkyun Cho ◽  
Beungyong Park ◽  
Yongdae Jeong ◽  
Sangmoon Lee
Keyword(s):  
Thermal Performance ◽  
Cooling System ◽  
High Density ◽  
Cooling Systems ◽  
System Availability ◽  
Density Data ◽  
Data Centre ◽  
Operational Characteristics ◽  
Time Required ◽  
Data Centres

In this study, an actual 20 MW data centre project was analysed to evaluate the thermal performance of an IT server room during a cooling system outage under six fault conditions. In addition, a method of organizing and systematically managing operational stability and energy efficiency verification was identified for data centre construction in accordance with the commissioning process. It is essential to understand the operational characteristics of data centres and design optimal cooling systems to ensure the reliability of high-density data centres. In particular, it is necessary to consider these physical results and to perform an integrated review of the time required for emergency cooling equipment to operate as well as the back-up system availability time.

scholarly journals Solar-driven Refrigerator for off-grid Regions

2019 ◽  
Vol 103 ◽  
pp. 01001
Author(s):  
Jakub Kuś ◽  
Kyrylo Rudykh ◽  
Marcin Kobas ◽  
Maciej Żołądek ◽  
Szymon Sendłak ◽  
...  
Keyword(s):  
Cooling System ◽  
Electrical Power ◽  
African Countries ◽  
Cooling Systems ◽  
System A ◽  
Absorption Cooling ◽  
Pv Modules ◽  
Solar Powered ◽  
Conventional Cooling ◽  
Absorption Cooling System

Refrigeration systems are necessary for people living in hot climates. A majority of tropical and subtropical countries uses electrical power as a source of cooling. During the seasons of high ambient temperature there is a significant cooling load due to increased level of energy consumption. Cooling systems are therefore necessary in African countries in order to keep medications and food in safe conditions. Furthermore, there is a power shortage crisis due to the high demand for cooling. TRNSYS software allows to simulate a complete solar-powered absorption cooling system. A model used in an experiment includes PV modules making it advantageous over a conventional cooling system. PV modules of assumed area are sufficient to maintain the temperature inside cooling device below 6°C over the whole year.

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