Design of an innovative PV/T and heat pump system for greenhouse heating
Open Access
- 30 June 2020
- journal article
- Published by Journal of Energy Systems in Journal of Energy Systems
- Vol. 4 (2), 58-70
- https://doi.org/10.30521/jes.740587
Abstract
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.Keywords
This publication has 30 references indexed in Scilit:
- Design and evaluation of a solar-based trigeneration system for a nearly zero energy greenhouse in arid regionJournal of Cleaner Production, 2020
- The calculation of greenhouse gas emissions of a family and projections for emission reductionJournal of Energy Systems, 2019
- Energy saving techniques for reducing the heating cost of conventional greenhousesBiosystems Engineering, 2018
- Evaluation of a hybrid system for a nearly zero energy greenhouseEnergy Conversion and Management, 2017
- Efficiency evaluation of a solar water heating system applied to the greenhouse climateSolar Energy, 2015
- Greenhouse heating by solar air heaters on the roofRenewable Energy, 2014
- Experimental evaluation of using various renewable energy sources for heating a greenhouseEnergy and Buildings, 2013
- Heating requirement and its costs in greenhouse structures: A case study for Mediterranean region of TurkeyRenewable and Sustainable Energy Reviews, 2013
- Evaluation of a heat pump system for greenhouse heatingInternational Journal of Thermal Sciences, 2010
- Effects of greenhouse cooling method on growth, fruit yield and quality of tomato (Solanum lycopersicum L.) in a tropical climateScientia Horticulturae, 2009