Performance Modelling of Dual Air/Water Collector in Solar Water and Space Heating Application

Viacheslav Shemelin,Tomas Matuska

doi:10.1155/2019/8560193

Viacheslav Shemelin, Tomas Matuska

Open Access

https://doi.org/10.1155/2019/8560193

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Abstract

In the present work, the detailed mathematical model of a dual air/water solar collector (DAWC) has been developed and experimentally verified. To demonstrate the application of the DAWC, three buildings with different energy performance levels and three building locations were chosen in analyzed case studies. Four solar collector systems were compared with one another. The solar yield of the described systems was determined by simulation using the detailed theoretical model of DAWC. The results indicate that in the case of combining a domestic hot water preparation system and recirculating-air heating system based on DAWC, it is possible to achieve up to 30% higher solar energy yield compared to a conventional solar domestic hot water preparation system dependent on climate and building performance.

Highlights

Flat-plate solar collectors are probably the most fundamental and most studied technology for solar-power domestic hot water systems
To demonstrate the application of the dual air/water solar collector (DAWC), three buildings from three different locations (Stockholm, Prague, and Milan) and each with different energy performance levels were chosen as case studies for comprehensive analysis
The comprehensive analysis of different solar systems based on DAWC for three building types in three climatic locations has been provided

Summary

Introduction

Flat-plate solar collectors are probably the most fundamental and most studied technology for solar-power domestic hot water systems. Products on sale today have been proven to be durable and reliable, and collectors are considered as a fairly mature technology. Even if this device has reached a good technological level and position in the market, the scientific and technological world has shown a constant attention to improve the energy performance of the collector. The objective of combining two different solar utilization technologies is to make the application field for a given collector wider and increase the potential energy gain from the area occupied by the collector. A known example of such a multipurpose collector is a photovoltaic-thermal solar collector combining PV technology and a solar thermal collector

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Results

Conclusion