Results 241 to 250 of about 115,365 (294)

HEAT PUMP DRYING OF AGRICULTURAL MATERIALS

Drying Technology, 1998
ABSTRACT Heat pump-assisted drying is an energy-efficient process because the heat is recoverable. However, the economic feasibility of the heat pump dryer (HPD) is debatable because high grade energy (electricity) is used. In this study, sawn rubber wood and bananas were dried in an experimental HPD.
S. Prasertsan, P. Saen-saby
exaly   +2 more sources

Herbs drying using a heat pump dryer

Energy Conversion and Management, 2006
Abstract In the present work, a heat pump assisted dryer is designed and constructed to investigate the drying characteristics of various herbs experimentally. R134a is used as a working fluid in the heat pump circuit during the experimental work. Experiments have been conducted on Jew’s mallow, spearmint and parsley.
Mohamed Shedid
exaly   +2 more sources

Review of heat pump systems for drying application

Renewable and Sustainable Energy Reviews, 2011
Abstract Heat pump system has been research and developed for different applications and mostly in space heating, cooling and dehumidifying (drying). To improve the performance of the heat pump system, research on modifying heat pump system and combining to other mechanism has been done widely.
Kamaruzzaman Sopian
exaly   +2 more sources

STUDY OF HEAT PUMP ASSISTED MICROWAVE DRYING

Drying Technology, 1993
To investigate the performance and feasibility of heat pump assisted microwave drying, a prototype dryer with a heat pump compressor rating of 5 kW and a maximum microwave power of 10 kW, was constructed and a mathematical model of the dryer was developed.
Jia X., Clements S., Jolly P.
openaire   +3 more sources

Heat pump dehumidifier drying of food

Trends in Food Science & Technology, 1997
Although heat pumps have been used extensively in industry for many years, their use for drying, especially foods, has been limited. This article reviews the potential of heat pump dehumidifier (HPD) dryers for use in food drying. HPD dryers offer several advantages over conventional hot-air dryers for the drying of food products, including higher ...
Conrad O. Perera, M. Shafiur Rahman
openaire   +1 more source

The Application of Heat Pump in Drying of Biomaterials

Drying Technology, 1996
ABSTRACT The UN estimates that 6.4 billion people will be living on Earth by the year 2000. As a consequence, dried biomaterials demand will rise and equipments will have to be built or redesigned to accomadate changes. The design and innovations on industrial dryers require fundamental knowledge conceived in laboratory units.
Milio Alves-Filho, Inwald Stranmen
openaire   +1 more source

Solar heat pump drying and water heating in the tropics

Solar Energy, 2006
Abstract In this study, the performance of a solar assisted heat pump dryer and water heater has been investigated. A simulation program has been developed. The predicted results are compared with those obtained from experiments under the meteorological conditions of Singapore. A coefficient of performance (COP) value of 7.0 for a compressor speed of
Hawlader, M.N.A., Jahangeer, K.A.
openaire   +1 more source

Exergetic analyses of a domestic heat pump for drying

South Florida Journal of Development, 2023
The use of heat pumps for heating and cooling a building or a single room is a technology that has been widely developed in recent times, the main advantage is that they provide higher efficiency compared to other heating methods such as fossil fuel combustion.
Raymundo López Callejas, Mabel Vaca Mier, Arturo Lizardi Ramos, Araceli Lara Valdivia, Hilario Terres Peña, Sandra Chávez Sánchez   +5 more
openaire   +1 more source