Performance analyses of sustainable PV/T assisted heat pump drying system

Koşan, Meltem; Demirtaş, Mehmet; Aktaş, Mustafa; Dişli, Ebubekir

doi:10.1016/j.solener.2020.02.040

Cited by 70 publications

(24 citation statements)

References 50 publications

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“…A photovoltaic installation is the most effective when the building's demand for electricity is large and the electricity produced serves for the owner's private use. Using the electric energy to power up the heat pump enables heating the building in winter and cooling it in summer, and hot water production throughout the year [19,20].…”

Section: Introductionmentioning

confidence: 99%

Impact of Compressor Drive System Efficiency on Air Source Heat Pump Performance for Heating Hot Water

Szreder

Miara

2020

Sustainability

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A standard Polish household with a central heating system powered by a solid fuel furnace was chosen as a case study. The modular Air Source Heat Pump (ASHP) was used to heat the hot water outside the heating season. In this article comparative studies of the impact of the compressor drive system used on the energy efficiency of the heat pump have been carried out in operating conditions. The ASHP heating capacity and coefficient of performance (COP) were determined for the outside air temperature in the range from 7 to 22 °C by heating the water in the tank to a temperature above 50 °C. For the case of a fixed speed compressor, average heating capacity in the range 2.7−3.1 kW and COP values in the range 3.2−4.6 depending on the evaporator supply air temperature were obtained. Similarly, for the inverter compressor, the average heating capacity in the range of 2.7−5.1 kW was obtained for the frequency in the range of 30–90 Hz and COP in the range 4.2−5.7, respectively. On cool days, the average heating capacity of the heat pump decreases by 12%. For the simultaneous operation of two compressors with comparable heating capacity, lower COP values were obtained by 20%.

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Section: Introductionmentioning

confidence: 99%

Impact of Compressor Drive System Efficiency on Air Source Heat Pump Performance for Heating Hot Water

Szreder

Miara

2020

Sustainability

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“…The simulation model is verified by the experimental result -is a reasonable method for predicting the seasonal performance of the system in future. Koşan et al (2020) designed and tested a PV/T assisted heat pump drying system and compared it with a PV panel. To set up the experiment, two 100W PV panels were used.…”

Section: Heat Pumpmentioning

confidence: 99%

A Review of the Recent Development of Photovoltaic/Thermal (PV/T) Systems and Their Applications

Noxpanco

Wilkins

Riffat

2020

Future Cities and Environment

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Hybrid photovoltaic/thermal systems have become an important energy technology due to their capacity of producing electrical and thermal energy simultaneously, their ease of integration into buildings and good overall performance. Conventional PV systems generate waste energy in the form of heat during the conversion of solar radiation into electricity. It has been shown that the electrical efficiency of PV panels decays with the rise in the PV cell temperature. Therefore, PV performance can be optimised if this heat is removed. Air and water are the most common media used for heat removal and the energy can then be used for heating applications in buildings. In the last five decades, researchers worldwide have carried out experimental studies, simulations and numerical modelling of different types of PV/T systems. In addition to water and air, heat removal methods such as refrigerants, PCM, heat pumps and nanofluids have been analysed. This work presents an overview and discussion of the research of the different PV/T thermal control systems of the last five years. The present study highlights key points of the different techniques that exist, such as overall efficiencies, parameters and configurations, type of system, the nature of work, country of development and applications. Based on this study, it was concluded that the PV/T systems are auspicious technology and that further work should be focused on the aesthetics of the systems to promote acceptance and improvement of the efficiency.

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“…The specific heat of the air varies with temperature and can be found as below [18]: , = 1009.26 − 0.0040403 + 0.00061759 2 − 0.0000004097 3 (9) The surface area of the PV/T panel used in GH can be found with the equation given below:…”

Section: Energy Analysismentioning

confidence: 99%

“…The total efficiency of the PV / T system used to meet the electricity and heat needs of the greenhouse are defined as follows [18]:…”

Section: Energy Analysismentioning

confidence: 99%

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Design of an innovative PV/T and heat pump system for greenhouse heating

Koşan

Akkoç

Dişli³

et al. 2020

Journal of Energy Systems

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The very high annual heat demand of greenhouses is the most critical factor that increases production costs. Conventional methods are generally used to obtain the optimum temperature required for greenhouses. In these systems, greenhouse air is heated by a boiler and pipe networks are connected to it, and in this way, most of the heat energy is transferred from the greenhouse ceiling to the atmosphere. In addition, in the greenhouse, not only the air but also the soil should be heated in order not to spoil the roots of the plants. The objective of this research is to provide sustainable heating for greenhouse applications. For this purpose, an innovative heating system has been designed for greenhouse heating by using of solar energy and heat pump technologies. In this study, a new approach was presented by designing a novelty heat pump flow for the heat required in the greenhouse. With this design, not only greenhouse air but also the soil will be heated and the best conditions for the development of plants will be provided. In the system, an ethylene glycol water mixture was used to prevent damage caused by freezing. In addition, it is designed to provide sustainability with an auxiliary heater when solar radiation is insufficient. It is highly recommended to apply this presented system for all greenhouse types.

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Performance analyses of sustainable PV/T assisted heat pump drying system

Cited by 70 publications

References 50 publications

Impact of Compressor Drive System Efficiency on Air Source Heat Pump Performance for Heating Hot Water

Impact of Compressor Drive System Efficiency on Air Source Heat Pump Performance for Heating Hot Water

A Review of the Recent Development of Photovoltaic/Thermal (PV/T) Systems and Their Applications

Design of an innovative PV/T and heat pump system for greenhouse heating

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