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1

Solar cooling system for Iraq

Al-Ahmedi K.

Polska Energetyka Słoneczna

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2017

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nr 1-4

1--6

EN

Solar cooling system for Iraq The main purpose of this paper is to present the cooling conditions in Iraq. This paper is trying to show solar cooling technology, which can be used in residential buildings in Iraq. Appropriate solar collectors for solar cooling in Iraq and storage tank will be perfect according to Iraqi conditions. This paper also aims to address the increasing demand of the airconditioning system in Iraq, due to the growth in economy and business, which has increased the demand for purchasing power in the last few years. The paper also focuses on reducing consumption of fossil fuels and proposes solar cooling system in Iraq, which would be economical and suitable for the environment.

2

Aspekty środowiskowe zastosowania chłodziarki absorpcyjnej w układach klimatyzacyjnych

Stefaniak J., Żelazna A., Pawłowski A.

Proceedings of ECOpole

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2012

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Vol. 6, No. 1

395--400

PL

Koncepcja rozwoju zrównoważonego, mówiąc o konieczności zapewnienia podstawowych potrzeb obecnego i przyszłych pokoleń, odnosi się m.in. do problemu dostępności i wyczerpywalności nośników energii. Coraz większy nacisk kładziony jest na zwiększenie efektywności procesów wytwarzania energii oraz jej zużycia. Istotne znaczenie ma również rozwój technologii korzystających z odnawialnych źródeł energii, których zastosowanie ma spowodować zwolnienie tempa zużycia tradycyjnych, kopalnych nośników energii. Wpływ środowiskowy technologii alternatywnych wiąże się nie tylko z samymi efektami eksploatacyjnymi. Ważne jest tu sprawdzenie potencjalnych wpływów na środowisko w całym cyklu życia danej technologii, poczynając od jej wytworzenia aż do likwidacji. W pracy przeanalizowano efekty zastosowania chłodziarki absorpcyjnej w danym układzie klimatyzacyjnym oraz koszty jej wytworzenia i użytkowania w aspekcie środowiskowym z wykorzystaniem techniki Oceny Cyklu Życia (LCA).

EN

The sustainable development concept, discussing the needs of present and future generations, is inter alia referring to the problem of accessibility and exhaustion of energy carriers. The growing demand for electricity and declining fossil fuel resources reduce the potential availability of energy for the future generations. Therefore, improvement of energy efficiency use and energy production is needed as well as promotion of renewable energy use leading to reduction in consumption of traditional energy carriers. The environmental impact of alternative technologies is not associated with the operational effects only. The potential environmental impacts throughout the lifecycle of the technology must be also assessed - from its manufacture to decommissioning. In this papers an assessment of the absorption chiller performance is presented and the environmental aspects of its manufacture and use are assessed with the technique of Life Cycle Assessment (LCA).

3

Solar air heater with heat storage

Smolec W., Jaroszyński M.

Polska Energetyka Słoneczna

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2009

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nr 1-4

54-59

EN

Experimental investigations of solar air heater with box-type absorber and with heat storage unit has been performed. The heat storage unit was filled with a commercial grade paraffine wax and its phase changes were applied to store the heat during operation of the air heater. Amounts of energy delivered by this air heater as well as by similar air heater but without heat storage unit were measured. Initial results revealed that the energy amounts delivered by solar air heater with heat storage unit are bigger than those delivered by solar air heater without heat storage unit.

4

A novel retrofittable solar cooler/heater based on adsorption cycle for domestic application

Crema L., Bozzoli A., Cicolini G., Zanetti A.

Polska Energetyka Słoneczna

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2009

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nr 1-4

43-53

EN

Solar driven cooling machines have been employed until recent years only in niche markets due to a series of reasons: dimensions of the machines, cooling power storage, production costs, and others. At present times there's a high request for a reliable technology :veloped for domestic applications at distributed level. The solar heating is a rapidly growing market and the available technologies ire almost consolidated, but a strong limitation to the application of solar collectors is due to the waste heat available in summer leriods, which limit the sizing of solar domestic installations, limit the capacity to provide not only support to hot sanitary water, but even to indoor space heating. The objective of the present work is to suggest a possible solution and try to give a contribution to the iescribed problem. The R&D performed at FBK-REET labs has produced a new concept of solar driven cooling/heating machine )ased on a double adsorption/desorption cycle acting between two small tanks. The machine, working cyclically between desorption nd adsorption, is provided of an heat storage to separate the cooling energy availability from the solar radiation. Thus the system is Je to provide not only cooling power in hot periods, but even heating in colder times or for hot sanitary water production. The system maybe scaled up or down in cooling capacity, sizing properly the porous adsorbing material volumes, and in cooling power, changing the air mass flow through the system. A prototype has been built, provided of a cooling capacity of about 25 kWh|h and wling power retrofittable until a max of 4 kWlh in the range of cold temperatures of about 8-M2°C. The overall COP is in the range of 0,6^-0,7. The system is patent pending (Publication number: WO2008099262).

5

Solar cooling systems

Jakob U.

Polska Energetyka Słoneczna

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2007

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nr 1-2

18-23

EN

This paper presents the different technologies of solar cooling systems and there advantages as well as functional characterisations. The air-conditioning as well as the solar thermal market in Europe and world-wide shows annual growth rates of several percents. In the first case initiated by the growing demand for air-conditioning in residential houses as well as office and hotel buildings and in the second case by increasing environmental awareness or political guidelines. Due to the large number of manufactured compressor units, these systems are produced and offered at very low prices, however, such systems increase the adverse effects on local environments as a result of using primary energy such as electricity. Therefore, it is important to search for alternative air-conditioning units that are driven by either waste heat or solar thermal energy.