solar heat pump Articles

  • Solar heat assisted solid desiccant dehumidifier saved over 30% electricity for air conditioning in Kish Island

    Thermal energy exploited from solar heater panels has been recently assisted in a desiccant wheel air conditioning demonstration project in Kish Island, Persian Gulf, Iran. “This demonstration unit was completed in late 2008 and successfully tested afterwards” said Pejman Izadkhast, M.E., the project manager, “simple solar water heating panels by total surface of 48m2 were utilized to supply ...

  • Seawater desalination with solar-energy-integrated vacuum membrane distillation system

    This study designed and tested a novel type of solar-energy-integrated vacuum membrane distillation (VMD) system for seawater desalination under actual environmental conditions in Wuhan, China. The system consists of eight parts: a seawater tank, solar collector, solar cooker, inclined VMD evaporator, circulating water vacuum pump, heat exchanger, fresh water tank, and brine tank. Natural ...


    By IWA Publishing

  • Cycle Stop Valve replaces four Variable Speed Pool Pumps case study

    This pool has 4 water features, a slide, a waterfall, a spa cascade, and a wet wall. I required the ability to run each of these water features independently. This pool also has four cleaning modes, two sets of in floor cleaning nozzles, skimming, filtering, and vacuuming. In addition this pool also has a 50 foot zero entry lip. In order to accommodate all the above a typical configuration would ...


    By Cycle Stop Valves, Inc.

  • The Potential of Solar-Powered Water Circulators to Help Solve Serious Water and Energy Problems in the U.S.

    With increasing human populations comes the corresponding increased need for improving water quality in lakes, wastewater ponds, potable water reservoirs, and other water storage facilities. Providing circulation within water reservoirs of all types has long been known to provide meaningful benefits, but the costs to achieve sufficient circulation through diffused aeration or mechanical mixers ...


    By Medora Corporation

  • Environmental thermodynamic limitations on global human population

    This paper examines, from a thermodynamic point of view, how many people the Earth can support. The maximum human population allowed by the natural earth ranges from 300 million millions to 1,700 million millions and will not exceed 1,300 million millions if an ambient temperature of 300 K is accepted. A further increase in population number is obtained for macro-engineered earth when heat pumps ...


    By Inderscience Publishers

  • The future for using jet devices for solving environmental problems

    The development of ejector technology is analysed as it applies for solving environmental problems. Success achieved in this field is connected with its special features the full absence of rotating and movable parts, lubricants and any seals and, consequently, the high reliability and low capital costs. This article concerns the use of jet devices for utilisation of steam obtained by means of ...


    By Inderscience Publishers

  • Prospects for using jet devices to solve environmental problems

    The development of ejector technology is analysed as it applies to the solving of environmental problems. The success achieved in this field is connected with its special features the full absence of rotating and movable parts, lubricants and any seals, and, consequently, the high reliability and low capital costs. This article concerns the direction of using jet devices for utilisation of steam ...


    By Inderscience Publishers

  • HQ to be the first Chilean building achieving LEED green building certification

    Transoceánica headquarters use a system of energy efficiency that incorporates passive design and solar reflection. The new headquarters for private equity firm Empresas Transoceanica in Santiago looks nothing like a conventional commercial set up. But it is expected to use just one-fifth of the energy of a comparable Chilean office. A wood-wrapped north facade deflects solar ...


    By Vital Efficienci Ltd.

  • Massachusetts Water Resources Authority (MWRA) – Boston and suburbs - Case Study

    The MWRA is a state government agency that provides wholesale water and sewer services to 2.5 million people and more than 5,500 large industrial users. It also monitors outflows in Cape Cod Bay and Boston Harbor using a range of advanced technologies. As an industrial user of electricity, agency officials are looking to reduce economic volatility from electricity costs and to improve energy ...

  • Hotel Melia Las Dunas Cayo Santa Maria, Cuba – case study

    OVERVIEW The Hotel Melia Las Dunas has 925 rooms and suites. Fresh water arrives at the Hotel in a DN 200 steel pipe (8”). Water consumption daily average is 936 m3 (almost 250,000 US Gallons per day) with peak rates up to 190 m3/h (833 gpm). WATER SYSTEM CHALLENGES The domestic hot water for the site is produced by two sets of three boilers ...

  • Digester gas - countess wear sewage treatment works - case study

    South West Water leads the way with highly efficient biogas combined heat and power Technology, utilising otherwise harmful digester gas. South West Water (SWW) provides clean water and sewerage services to over 1.6 million people, 365 days a year. Dedicated to environment and conservation issues, SWW is committed to using energy efficient Combined Heat and Power (CHP) generation systems. SWW has ...


    By ENER-G

  • Digester gas - case study

    BV Dairy, of Dorset, is aiming to cut its carbon footprint by more than 65% as a pioneer of liquid Anaerobic Digestion (AD) technology BV Dairy, Shaftsbury, Dorset Established in 1958, BV Dairy processes around 35 million litres of milk per year, sourced from 35 farms located near its site. The product range includes fresh and cultured dairy products for sale to the UK’s ...


    By ENER-G

  • Unsung heroes of a `green and growing` strategy

    Viewpoint from Jason Eis, Senior Strategy Manager, Carbon Trust In the face of a fragile economic recovery and ambitious emissions targets, there is a pressing need to find opportunities that marry “green” and growth. Much is made of some issues, especially electricity supply (offshore wind, solar power, nuclear), low-carbon vehicles (whether electric or fuel cell), smart grids, and ...


    By Carbon Trust

  • Optimized Membrane Treatment Hydrocarbon Engineering

    Membrane processes are becoming popular in downstream processing plants for the production of boiler feed water, treatment and recycling of wastewater and integration into various processes. The design and efficiency, both hydraulically and in terms of energy, are improving rapidly Design changes such as heating feedwater through solar ponds can result in up to 35% reduction in energy ...


    By Kurita

  • Digester gas - Stornoway Scotland - case study

    Scottish Island to be the first to utilise Anaerobic Digestion in waste treatment Comhairle nan Eilean Siar Stornoway, Isle of Lewis, Scotland “We were convinced by ENER-G’s ability to install a system that met with our requirements for a facility that is an innovative combination of waste treatments and includes the UK’s first dry Anaerobic Digestion facility” ...


    By ENER-G

  • Case study - Carbon-neutral cottage in Suffolk

    Carbon Neutral Cottage in Suffolk. Little Cottage in Wickham Market is a great example of what carbon neutral homes of the future may look like and they estimate the 120 sq.m property could cost as little as £340 a year for heating, hot water and lighting. The Site Little Cottage in Wickham Market is a great example of what carbon neutral homes of the future may look ...

  • The Variety Kinds of Fote Briquette Machine

    To make our life more convenient and efficient, Fote Machinery produces many machines to meet the satisfactory of people. For example, Fote briquette machine which is widely used in coal, chemical. And there are many kinds of briquette machine, such as coal ball press machine, coal briquette press machine, dry ...


    By Fote Machinery

  • Wolselely`s Sustainable Building Centre: Showcasing the now

    This European and North American building products wholesaler employs more than 80,000 people in 5,000 distribution centres, including 1,800 branches across the UK. One of the newest additions to the network is in Leamington Spa and is designed to showcase sustainable building technology. Business insight The  ...


    By Article 13

  • SolarBee Technical Bulletin

    A. SOLARBEE OVERVIEW 1. Origin of the SolarBee. Pump Systems, Inc. (PSI) developed, built and installed its first solar powered mixer in Dickinson, ND, in the summer of 1998. It was installed into a 30 acre x 13 foot deep municipal wastewater reservoir which had a long history of toxicity associated with ammonia, odor, and stratification problems. In six weeks the entire reservoir cleared up to ...


    By Medora Corporation

  • The Nature of the New World

    We recently entered a new century, but we are also entering a new world, one where the collisions between our demands and the earth’s capacity to satisfy them are becoming daily events. It may be another crop-withering heat wave, another village abandoned because of invading sand dunes, or another aquifer pumped dry. If we do not act quickly to reverse the trends, these seemingly isolated events ...


    By Earth Policy Institute

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