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Heat pumps

Heat pumps

  • Sustainable domestic water pumping using solar photovoltaic

    Type: 
    Technical Assistance
    Date of submission:
    Phase:
    Implementation
    Countries:
    Objective:
    Sectors:
    Cross-sectoral enabler:

    Context

    Pumping of water for domestic and productive uses has been difficult to maintain in Tanzania. This challenge is highly attributed by the higher costs of pumping water using conventional means such as diesel generators and electricity.

    Solar Photovoltaic (PV) technologies have enabled rural communities of Tanzania to apply this technology for lighting, water pumping, charging of cell phones, etc. Community water projects using solar pumps have benefitted from reduced running costs as compared to diesel or electric water pumps.

  • Efficient air conditioning systems

    Type: 
    Technology
    Objective:

    Cooling is becoming a rapidly emerging demand in developing countries, which signifies that the building design and shell measures need to reduce cooling loads, and the efficiency of air-conditioning will need to be improved. Air conditioning systems are implemented in numerous sectors, namely buildings, industry and transport. They are distinguished in two main categories, room air conditioners and central air conditioners.

  • Instituto de Investigación Geológico y Energético

    Type: 
    Organisation
    Knowledge partner
    Country of registration:
    Ecuador
    Relation to CTCN:
    Network Member
    Knowledge Partner
    TA proponent

    IIGE is a research institute that promotes development, innovation and transmission of technology focused on energy efficiency and renewable energy. The institute aims to contribute to the sustainable development of the Ecuadorian society, through the implementation of energy efficient and energy renewable policies and projects.

  • Global Environment Centre Foundation

    Type: 
    Organisation
    Knowledge partner
    Country of registration:
    Japan
    Relation to CTCN:
    Network Member
    Knowledge Partner

    The Global Environment Centre Foundation (GEC) is an entity that supports the UNEP’s International Environmental Technology Centre (IETC), based in Japan. GEC is dedicated to the transfer of environmentally sound technologies, in both developing countries and countries with economies in transition. The foundation aims to contribute to Japan’s international efforts on the environment, sharing project collaborations as well as promoting Japan’s rich conservation knowledge and experience in developing nations.

  • Treadle Pump Irrigation and Poverty in Ghana

    Type: 
    Publication
    Publication date:
    Objective:
    Sectors:

    Treadle pump (TP) technology has been promoted by Enterprise Works Worldwide (EWW) in West Africa as an alternative to the traditional rope and bucket irrigation that is necessary to overcome the challenge of uncertain and inadequate rainfall for agricultural production. The aim is to improve output, increase income and reduce poverty among rural farm households. This study examines the strategies used for dissemination of the TP and the dynamics of its adoption and impacts, with a special focus on poverty reduction.

  • Dynamics of well irrigation systems and CO2 emissions in different agroecosystems of South Central India

    Type: 
    Publication
    Publication date:
    Objective:

    This study was undertaken to assess the carbon dioxide emissions for different irrigation systems, in the context of growing demand for adaption of pressurised irrigation with electric pumps in South Central India.

    The paper argues that water application systems under wells extracting groundwater are one of the major factors influencing climate change in the agricultural sector.

  • Photovoltaic Pumps: Technical and Practical Aspects for Applications in Agriculture

    Type: 
    Publication
    Publication date:
    Objective:
    Sectors:

    This paper deals with a series of tests conducted on a PV-DC pump. The tests involved measurements of solar radiation, on both a horizontal surface and the tilted module surface, flow rates, volumes, and total dynamic heads. In total, up to 3000 data were collected every day whose analysis allowed the authors to find empirical relationships between system efficiencies, solar radiations and total dynamic heads.

  • Performance and Economic Evaluation of Pumped Irrigation Systems: A Case of Smallholder Horticultural Farmers

    Type: 
    Publication
    Publication date:
    Objective:

    The study was carried out with the objectives evaluating the technical performance of the pumps used in smallholder irrigated agriculture, studying the energy uses during pumping and identifying the possible causes of inefficient energy use, and evaluating the costs of pumping used during irrigation. A study to identify the occurrence of pumped irrigation systems in Thika and Yatta District, Kenya was done.

  • Natural Refrigerants: Sustainable Ozone- and Climate-Friendly Alternatives to HCFCs

    Type: 
    Publication
    Publication date:
    Objective:

    The handbook contains 31 articles by individual authors covering the following issues: policies and legislation on F-gases and related issues (Part 1), safety concerns and means to overcome (Part 2), a technical assessment of natural refrigerants in different applications (air conditioning, commercial and industrial refrigeration and heat pumps) (Part 3) and case studies by manufacturers and end-users providing insights into market developments and examples of successful conversions to natural refrigerants (Part 4).

  • The Case for the Rope-Pump in Africa: A Comparative Performance Analysis

    Type: 
    Publication
    Publication date:
    Objective:
    Sectors:

    According to this paper, an alternative to standardised imported hand pumps is the locally manufactured rope pump, which is considerably cheaper and easier to maintain but has been rejected in the past because of fears of impaired water quality. This paper presents the key aspects of a study in northern Ghana that compared the performance of rope pumps with that of conventional hand pumps, to determine whether the rope pump provides a viable alternative for community water supplies across the subcontinent.