Abstract
Worldwide energy supply is mostly reliant on fossil fuels. Carbon dioxide emissions have caused many negative environmental issues like climate change, air pollution, and energy security. An important alternative to this hazard is substituting the fossil fuel-based carbon energy sources with renewable energy sources. Passive strategies, which are devised to provide thermal comfort in buildings are examples of how to use renewable energies. For this study, a dairy product warehouse in the city of Yazd in Iran was thoroughly investigated. The main goal of this study is to introduce different scenarios, then identifying them based upon optimization of energy consumption. Another main purpose of the present study is to maximize the use of passive energy to meet the cooling needs of a dairy products warehouse in the studied area. Underground temperature is lower than the surface in summer, also it is higher in winter. Therefore, this property of soil is investigated by using nine different scenarios at different heights for constructing underground warehouse for storing dairy products. Clearly, different renewable tools like wind turbine, wind catcher, solar chiller, and different roof designs by Savanah grass, roof pond are also investigated. At first, the cooling load of the warehouse is calculated separately for each season. Then, according to the energy load values obtained, the nominated scenarios are investigated. The results of the comparisons show that the construction of a warehouse at a depth of 3 m from the ground with a green roof covered with Savannah grass helps achieve the best degree of reduction in the cooling power.
Highlights
The purpose of this study is to find passive methods to reduce energy consumption and cooling costs of dairy storage which could be applied to different regions
The study was conducted with the aim of reducing the energy consumption and, reducing the costs of refrigerating dairy products in Yazd
Through the evaluation of the costs in this sector, the share of energy consumption to cool down the warehouse was estimated
Summary
Due to the severe energy crisis in developing countries over the past two decades, especially for cooling in summer, energy has become a major issue of concern [1]. With the growing awareness of people and decision makers about the environmental disasters associated with overreliance on fossil fuels, there is a growing concern regarding of renewable and clean energies. Environmental pollution, and high price of oil are main issues which motivate use of renewable energies [2]. A passive air conditioning system is a key factor in reducing the negative impact of buildings on the environment.
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