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Optimization of operating parameters of ground source heat pump system for space heating and cooling by Taguchi method and utility concept

Sivasakthivel, T.; Murugesan, K.; Thomas, H.R. - In: Applied Energy 116 (2014) C, pp. 76-85

system. However, the COP of a GSHP system will be different for heating and cooling mode operations. Hence in order to reduce … will operate on both heating and cooling modes. Condenser inlet temperature, condenser outlet temperature, dryness fraction …. Optimization of these parameters for only heating or only cooling mode operation is achieved by employing Taguchi method for three …

Persistent link: https://www.econbiz.de/10010737711

Experimental study of an air-source heat pump for simultaneous heating and cooling – Part 2: Dynamic behaviour and two-phase thermosiphon defrosting technique

Byrne, Paul; Miriel, Jacques; Lenat, Yves - In: Applied Energy 88 (2011) 9, pp. 3072-3078

This article presents the concepts of an air-source heat pump for simultaneous heating and cooling (HPS) designed for … hotels and smaller residential, commercial and office buildings in which simultaneous needs in heating and cooling are … frequent. The main advantage of the HPS is to carry out simultaneously space heating and space cooling with the same energy …

Persistent link: https://www.econbiz.de/10010576278

Corrosion of metal and metal alloy containers in contact with phase change materials (PCM) for potential heating and cooling applications

Moreno, Pere; Miró, Laia; Solé, Aran; Barreneche, Camila - In: Applied Energy 125 (2014) C, pp. 238-245

four of them commercial PCM, are tested. Since they are PCM to be used for heating and cooling applications they are … coupled to a heating, ventilation, and air-conditioning (HVAC) system such as heat pump. In these systems the PCM is embedded …

Persistent link: https://www.econbiz.de/10011040467

Minimal heating and cooling in a modern rose greenhouse

Van Beveren, P.J.M.; Bontsema, J.; Van Straten, G.; Van … - In: Applied Energy 137 (2015) C, pp. 97-109

In a modern greenhouse there are a number of alternative systems that can be deployed to control the climate, and the choice what to use and when is not easy for the grower. A novel management system is proposed, consisting of an energy input minimizing module, and a module to realise the...

Persistent link: https://www.econbiz.de/10011116130

Fractal dimension of wind speed time series

Chang, Tian-Pau; Ko, Hong-Hsi; Liu, Feng-Jiao; Chen, … - In: Applied Energy 93 (2012) C, pp. 742-749

The fluctuation of wind speed within a specific time period affects a lot the energy conversion rate of wind turbine. In this paper, the concept of fractal dimension in chaos theory is applied to investigate wind speed characterizations; numerical algorithms for the calculation of the fractal...

Persistent link: https://www.econbiz.de/10010571949

Performance characteristics of a dual-evaporator heat pump system for effective dehumidifying and heating of a cabin in electric vehicles

Ahn, Jae Hwan; Kang, Hoon; Lee, Ho Seong; Kim, Yongchan - In: Applied Energy 146 (2015) C, pp. 29-37

In electric vehicles, air-conditioning (AC) units and electric heaters have been used for dehumidifying and heating the … cabin. However, the air heating process in the electric heater causes higher power consumption due to a lower air … temperature entering the electric heater from the sensible cooling in the humidifying process. In this study, a heat pump (HP) and …

Persistent link: https://www.econbiz.de/10011263337

Targeting utility customers to improve energy savings from conservation and efficiency programs

Taylor, Nicholas W.; Jones, Pierce H.; Kipp, M. Jennison - In: Applied Energy 115 (2014) C, pp. 25-36

Electric utilities, government agencies, and private interests in the US have committed and continue to invest substantial resources – including billions of dollars of financial capital – in the pursuit of energy efficiency and conservation through demand-side management (DSM) programs....

Persistent link: https://www.econbiz.de/10010737686

Individual decisions and system development – Integrating modelling approaches for the heating market

Bauermann, Klaas; Spiecker, Stephan; Weber, Christoph - In: Applied Energy 116 (2014) C, pp. 149-158

Improvements in the building stock insulation and the replacement of heating systems will have to take place within the … presents an integrated, iterative modelling approach to determine the development of the heating market. A system model … heating system choice. In the application case, the potentials for different heating technologies are investigated under three …

Persistent link: https://www.econbiz.de/10010737731

Impact of control schemes of a monovalent inverter-driven water-to-water heat pump with a desuperheater in continental and subtropical climates through simulation

Blanco, David L.; Nagano, Katsunori; Morimoto, Masahiro - In: Applied Energy 109 (2013) C, pp. 374-386

combined space heating and domestic hot water, in order to provide realistic results, from which four control schemes based on …, in Japan, for the coldest day of the year and for the heating season. Emphasis was given to the short-term domestic hot …

Persistent link: https://www.econbiz.de/10010678785

Geothermal heat pump systems: Status review and comparison with other heating options

Self, Stuart J.; Reddy, Bale V.; Rosen, Marc A. - In: Applied Energy 101 (2013) C, pp. 341-348

Heating is a major requirement in many regions, and growing energy demands and pollutant emissions have allowed … unconventional heating technologies to be considered, including geothermal. Geothermal heat pumps are reviewed, including heat pump … heating systems are compared in terms of costs, CO2 emissions and other parameters. Geothermal heat pump use is economically …

Persistent link: https://www.econbiz.de/10010593978