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Payback period estimation of ground-source and air-source multi heat pumps in Korea based on yearly running cost simulation.

Number: pap. n. R2, 2496

Author(s) : PARK N., JUNG S. H., PARK H. W., et al.

Summary

In this study, we compute yearly running cost of air- and ground-source multi heat pump for space cooling, floor heating, and domestic hot water. From computed yearly running cost, payback period was computed when they replace the gas-fired boiler and air-conditioner combination. Toward accurate running cost simulation, we develop an in-house simulation code that integrates heat pump performance, realistic floor heating, space cooling by indoor units, and hot water storage tank. Annual running cost is computed by integrating input power consumption by the compressor and pumps based on detailed hourly outdoor temperature data of Seoul and domestic hot water usage pattern. It is shown that the annual running costs of ground- and air-source heat pumps are, respectively, 20~45%, and 56% of that of boiler and air conditioner, and that the payback periods are from 3.0 to 15 years depending on the progressive electricity tax, subsidy level for the installation cost, and discharge water temperature control method.

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Pages: 14 p.

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Details

  • Original title: Payback period estimation of ground-source and air-source multi heat pumps in Korea based on yearly running cost simulation.
  • Record ID : 30000488
  • Languages: English
  • Source: 2010 Purdue Conferences. 13th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2010/07/12

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