heat pump Articles

  • Heat Recovery Steam Generators (HRSG) & Blowdown Pump Stations

    Romtec Utilities engineers and supplies pump stations for many different applications for industrial facilities across the country. These facilities range from chemical manufacturing to oil & gas refineries, and power generation is another industrial market where Romtec Utilities excels. We have supplied many different types of pumping systems for power gen facilities for wastewater, ...


    By Romtec Utilities Inc.

  • Get more Bang for your Buck with Solar Thermal!

    The relative efficiency of renewable energy technologies – i.e. their ability to transform solar or wind energy into electricity and heat – is a key element in calculating the likely effectiveness and expected ROI of renewable installations. Recently published research shows that solar thermal technology is more efficient than any other renewable system. According to the latest ...


    By Kingspan Environmental Ltd

  • 13 surprising tools a plumber needs

    What tools does a plumber need in their tool box? Professional installers tell us they use these top 13 plumbing tools time and again. Our list of surprising plumbing tools goes beyond your day-to-day staples of a good hacksaw, a set of well-engineered adjustable spanners, basin spanners, screwdrivers and a decent tape measure. Great all-rounder plumbing tools ...


    By Kingspan Environmental Ltd

  • Heat Pumps – FAQs

    1. What is a Heat Pump? To put it simply; ground source heat pumps and geothermal heat pumps produce high grade heat from low grade heat which is found in the earth and our atmosphere.2. How does a Heat Pump Work?Heat pumps work in exactly the same way as air conditioners or refrigerators, but in reverse! Heat pumps capture latent energy which is stored in sources such as air, water and earth. ...


    By ICS Cool Energy Ltd.

  • Pumps are the heart of heat-transfer plants

    Manufacturers in a variety of industries depend on heat-transfer plants to heat or cool their machines and apparatus. German firm heat11 GmbH & Co. KG specializes in heat-transfer plants of virtually all types. The chemical industry uses their installations for controlling the temperature of reactors and during the production of color pigments and liquid crystals. In the plastics industry, ...


    By ALLWEILER GmbH

  • Pumps for synthetic heat-transfer liquids

    As soon as the temperature in a heat-transfer system becomes too high for water, a plant operator must choose between petroleum-based or synthetic oils as the heat-transfer liquid. When modern petroleum oils are used, systems with feed temperatures up to about 300 °C can stay in service for their entire service life with one filling and with virtually no maintenance. Once feed temperatures ...


    By ALLWEILER GmbH

  • Energy and exergy analysis of an Automobile Heat Pump system

    This study deals with energy and exergy analysis of an Automobile Heat Pump (AHP) system using R134a as the working fluid and ambient air as a heat source. An experimental AHP system consisting of original components from an Automobile Air Conditioning (AAC) system and some extra equipment was developed and instrumented. The system was operated in steady state under various ambient and return air ...


    By Inderscience Publishers

  • Effect of heat transfer law on the ecological optimisation of a generalised irreversible Carnot heat pump

    The optimal exergy-based ecological performance of an irreversible Carnot heat pump with the losses of heat-resistance, heat leak and internal irreversibility, in which the transfer between the working fluid and the heat reservoirs obeys a generalised heat transfer law Q ∝ Δ (Tn), is derived by taking into account an ecological optimisation criterion (E) as the objective function, ...


    By Inderscience Publishers

  • Steady versus dynamic exergy analysis: the case of an air source heat pump

    Exergy analysis is often performed statically, for given system conditions and reference state. Dynamic exergy analyses, considering the variation of system operation and ambient conditions, would obviously be more time consuming. Therefore comparing the results of the two approaches helps understand when the dynamic methodology should be preferred. In this paper the yearly behaviour of a ...


    By Inderscience Publishers

  • Technical and economic analysis of gas-engine driven heat pump in China

    In this paper, the primary energy ratio and economic benefit of five different heating systems are analysed. The results show that the gas-engine heat pump system has the advantages of high primary energy efficiency and favours environmental protection in contrast to the other four heating systems. At the same time, to improve the economic benefit of the energy saving and environmental protection ...


    By Inderscience Publishers

  • Utilisation of air-groundwater exergy potential for improvement of the performance of heat pump systems

    This paper reports a study on the use of the non-flow air-groundwater exergy potential for improving heat pump performance. It is shown that for air/groundwater temperature differences of order 15°C, energy savings up to 50% may be expected for heat pumps operating either in the heating mode or in the cooling mode. It is also shown that the reduction in the energy required to drive the heat pump ...


    By Inderscience Publishers

  • Water Source Heat Pumps For 14th Century Castle In Oxfordshire

    Better Planet was selected to design, supply, install and commission two brine to water heat pumps with a combined thermal output of 70 kW for this castle in Oxfordshire replacing oil heating. In preparation of the project, Better Planet carried out a room by room heat loss calculation allowing us to advice the client on required upgrades of radiators in ...


  • Heat Pump Used to Drain Contaminated Sludge in a Steel Factory

    Summary In 1987, new regulations required that factories dispose of their contaminated water and waste themselves. Making galvanised steel wire, the Stelfil factory produces sludge contaminated with lead and zinc. Stelfil spent thousands of dollars to bury this waste and evaluated three systems to remove most of the water: a gas dryer, an induction heated screw conveyor and a heat pump system. ...


  • Exergy analysis of a vapour-compression refrigeration/heat pump cycle with chimney

    The greatest speciality of this work is using chimneys with different heights above the condenser instead of a condenser's fan on the vapour-compression refrigeration/heat pump system chosen as an experimental set. Exergy analyses of natural convection with and without chimneys and forced convection on the same experimental set have been made with acceptances of steady state-steady flow system on ...


    By Inderscience Publishers

  • Emotion Energy - Air Source Heat pump case study

    Customer: Emotion Energy Location: Dumfries Heating System: 12KW Calorex Air to Water Heat Pump Installed: 09 Vortex was installed by Emotion Energy on an old isolated cottage which had been extended. They replaced an old oil boiler with a Calorex 12KW air to water heat pump and fitted Vortex ...


    By Vortex Energy Saver

  • Energy and exergy analysis of a solar–assisted heat pump space heating system for clear days

    The studies over solar–assisted heat pump systems have been performed mostly on time periods when solar radiation is high. Therefore, this study focuses on performance analysis of a solar–assisted heat pump system which stores the energy during the clear day and uses it as a heat source of heat pump space heating system during the night. Energy and exergy analyses divided into two parts, which ...


    By Inderscience Publishers

  • Thermodynamic analysis and assessment of space heating with ground–source heat pump for sustainable future

    In this paper, the thermodynamic modelling of exergy loss, exergy efficiency, exergy destruction rate, environmental destruction coefficient, improvement potential, exergy destruction factor, relative irreversibility, productivity lack and exergetic factor of ground source heat pump (GSHP) system are investigated. The results show that these exergy indexes should be used integratively. Compressor ...


    By Inderscience Publishers

  • Comparative performance analysis for endoreversible simple air heat pump cycles considering ecological, exergetic efficiency and heating load objectives

    The performance analysis and optimisation of endoreversible simple air heat pump with constant-temperature heat reservoirs is carried out by using finite-time thermodynamics. The expressions of the heating load, the exergetic efficiency and the ecological function of the cycle are derived. The influences of the pressure ratio of the compressor and the allocation of heat exchanger inventory on the ...


    By Inderscience Publishers

  • Exergy modelling of vapour compression heat pumps using refrigerant mixtures

    Our work outlines the variation of exergy efficiency factor, COP and exergy flow related to the replacement of R22 in vapour compression heat pumps with the mixtures R407C and R410A. A mathematical model was developed to simulate the relevant thermodynamic cycles and an attempt was made for our results (efficiency and exergy losses) to be presented. Furthermore, particular attention has been ...


    By Inderscience Publishers

  • Thermodynamic analysis of a hybrid gas turbine/thermoacoustic heat pump/refrigeration engine

    Possible performance enhancement of small gas turbine power plants through the application of thermoacoustic systems is examined. The thermoacoustic subsystem is powered only by the waste heat of the gas turbine. Two different gas turbine configurations are considered: a Thermoacoustic refrigerator assisted gas turbine (TRG) and a Combined thermoacoustic heat pump and refrigeration assisted gas ...


    By Inderscience Publishers

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