Optimizing solar-assisted industrial heating and cooling system for cost-effective installation

Hiben, Yacob Gebreyohannes; Kahsay, Mulu Bayray; Lauwaert, Johan

doi:10.1016/j.applthermaleng.2023.120778

Cited by 2 publications

(1 citation statement)

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“…The results showed that the use of parabolic trough collectors can significantly reduce operating costs and greenhouse gas emissions compared to conventional natural, gas-fired power plants. On the other hand, certain scholars [17,18] have optimized the design of a solar industrial heating system to significantly reduce the annual lifecycle cost in order to generate a low-to-medium process heat so as to meet the heat demand of the industrial process while minimizing the dependence on fossil fuels.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Influence Factors of the Crude Oil Temperature Maintenance System of Solar Sewage Heat Pumps in Cold Regions

Zhu,

Gu,

Duan

et al. 2023

Energies

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Traditional crude oil heating methods that use fossil fuels or electricity have the disadvantages of high consumption of nonrenewable resources, low energy utilization, and high carbon emissions. Therefore, it is urgent to develop green and sustainable crude oil heating technologies. In this paper, a solar synergistic sewage heat pump (SSHS) dual heat source crude oil temperature maintenance system is proposed. The system utilizes clean and sustainable solar energy to heat crude oil while combining sensible heat storage technology and the waste heat utilization technology of a sewage source heat pump to solve the unstable fluctuation of the solar heating problem. A simulation and analysis model is established to analyze the influencing factors of the SSHS, and the optimal operation scheme is provided. The results show that the efficiency of the solar collector decreases and the proportion of crude oil heating increases with an increase in the solar energy guarantee rate, while the unit flow rate of the pump has a large impact on the performance of the sewage source heat pump. In order to avoid energy waste, it is more appropriate to adopt a 30% guarantee rate and an A3 pump unit flow rate, under which the solar collector efficiency is 50.18%, the proportion of solar heating of crude oil is 47.16%, the average temperature of crude oil is 42.59 °C, and the COP of the sewage source heat pump is 4.65. Further increases in the COP of the wastewater source heat pump can be realized by increasing the temperature of the wastewater supply. The results of this study provide a valuable reference for the optimization of crude oil storage heating systems.

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Section: Introductionmentioning

confidence: 99%