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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
An Investment Cost Analysis of Solar Hot Water System Combined with Economizer for Industry
Author(s)
Samnao Pansang and Sarayooth Vaivudh
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DOI:10.17265/1934-8975/2017.01.004
Affiliation(s)
School of Renewable Energy Technology, Naresuan University, Phitsanulok 65000, Thailand
ABSTRACT
A combination of solar hot water
system with the economizer for heating the water that circulates in the hot water
storage tank is presented with the objective to reduce and analyze the cost of investment.
The solar collector area will be affected to the investment cost of the solar hot
water system. A combined system can be reduced the cost of solar collector by using
the waste heat from the economizer to produce the hot water for reaching the requirement
of the industry. In this paper the economizer installs in the boiler stack of the
industry and produces hot water at 60 °C of 5,400 liter per day and the solar hot water system produces
the hot water at the same temperature of 6,100 liter per day. The analysis is proposed by determining the solar collector plate area from the data and calculation.
Investment cost of the system is 151,000 baht for the solar hot water system of
110,000 baht and the economizer of 410,000 baht for producing the total hot water
of 115,000 liter per day.
KEYWORDS
Investment cost analysis, solar hot water system, economizer.
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