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China, India and USA: Study Recommends Policies for Energy-Efficient Water Heaters

Submitted by Baerbel Epp on April 18, 2016
ClaspA study by US non-profit organisation Clasp, British management consultancy Waide Strategic Efficiency and other partners has analysed the market potential of efficient water heater technology, among them solar thermal systems and heat pumps in China, India and the USA. The 176-page document Policy Opportunities for More Efficient Residential Water Heating shows the key differences between markets and policies and gives advice on policy measures to reduce the energy consumption of water heaters. One central recommendation is to implement energy efficiency labels, which would allow customers to compare different water heater technologies. No such labelling has been in place yet in any of the three countries. The chart shows the Chinese energy label, which is only used for gas combi boilers, the Indian label for electric storage water heaters and the US label for gas-storage water heaters. 
Figure: Clasp
 

Study on a Solar Heating System using Low Temperature Radiators (2013)

Submitted by Raquel Ponte Costa on March 25, 2015

The University of Constantine, in Algeria, conducted a study on a solar heating systems using low temperature radiators, which  was presented at the 16th International Thermal Days conference taking place in Marrakech in November 2013.

The objective of the study was to do a simulation of a solar heating system using solar collectors connected to oversized central heating radiators in order to function at low temperature. In addition to collectors and radiators, they have also used a water storage tank and an additional energy source.

Germany: Solar Heating Saves more CO2 than Maximum Insulation

Submitted by Baerbel Epp on June 1, 2012

 Sonnenhaus Solar thermal heating makes houses up to 67% more energy-efficient than a perfectly optimised building envelope. This is the result of a paper which compared the efficiency of solar thermal systems with building insulations. The study, which was commissioned by the German Federal Solar Industry Association (BSW Solar) and carried out by the German Sonnenhaus-Institut e.V. (Solar Houses Institute) and engineering firm Econsult, found that structures with a high solar thermal coverage are significantly more environmentally-friendly.
Photo: Sonnenhaus-Institut e.V.

Europe: Which Path Takes the Small-capacity Sorption Cooling Industry?

Submitted by Baerbel Epp on November 28, 2011

 Solar Sorption ChillersWhereas the global market for chillers with small cooling capacities has a volume of around 70 million units annually, the European industry of small-capacity sorption cooling is still in its infancy and is facing many challenges. A newly published study, “Scenario Planning for the European Small Capacity Sorption Cooling Industry”, has identified four different ways the industry could take in a sector whose future development is still hard to predict and depends on several unknowns. The study also helps with strategic recommendations on how the European industry can prepare itself for the possible future in each of these scenarios. The photo shows a selection of small-capacity solar chillers.
Source: Presentation Green Chiller at ESTEC 2011

Applications of Solar Energy for Domestic Hot Water and Buildings Heating/Cooling (2011)

Submitted by Raquel Ponte Costa on October 7, 2011

This article was published in the International Journal of Energy of the North Atlantic University Union. It advocates for the solar generation of thermal energy and its use for buildings and domestic water heating in Romania.

India: Call for low-cost Solar Water Heaters in Himalayan Region

Submitted by Baerbel Epp on April 4, 2011

 Himalaya Map” The current use of Solar Water Heaters (SWHs) in India's Himalayan region remains rather limited, if not scarce. Including Jharkhand, the region's total installed collector area has been estimated at around 33,000 m2 until the end of 2010, which is less than 1% of the total installed SWH capacity in the country. Most of the existing systems are part of commercial and institutional buildings, whereas the domestic sector makes very little use of SWHs. These are some of the results of the study “Market assessment of solar water heating systems in the Himalayan Region” carried out by Greentech Knowledge Solutions on behalf of the United Nations Development Programme (UNDP) and the Global Environment Facility (GEF).
Figure: Greentech Knowledge Solutions

India: ESCO Model gives Hope as Market Driver

Submitted by Baerbel Epp on January 2, 2011

 Four cities with ESCO model” Spanish-headquartered consultancy Mercados Energy Markets India (Mercados EMI) Pvt. Ltd. has carried out a study to establish a clear understanding of the Energy Service Company (ESCO) model for delivering customers with solar hot water. The assessment was conducted in the four cities seen on the map.
Figure: Mercados EMI

Designing a Solar Thermal Cylindrical Parabolic Trough Concentrator by Simulation (2003)

Submitted by Raquel Ponte Costa on November 25, 2010

This paper was presented during the International Rio3 Congress, World Climate and Energy Event that took place in Rio de Janeiro, Brazil, in 2003. It was drafted by two researchers from the Universiti Teknologi Petronas in Malaysia.

The paper explores the possibilities of designing procedures of a solar thermal cylindrical parabolic trough concentrator (CPTC) by simulation.

Heat Plan Denmark (2009)

Submitted by Raquel Ponte Costa on October 29, 2010

This document explains a study carried out by the company Rambøll Denmark and the Aalborg University about the Danish district heating market and technologies.

The study was presented at the District Energy Climate Summit held parallel to the COP 15, the United Nations Climate Change Conference that took place in Denmark in December 2009.

The document reviews Danish policies, legislations and political targets set in the past to what regards the use of renewables. It also mentions different district heating projects with geothermal, CHP, solar thermal and others.

Renewables for Heating and Cooling (2007)

Submitted by Raquel Ponte Costa on July 13, 2010

This document, prepared by the International Energy Agency, comes as a follow-up of the 2006 seminar “Renewable heating and cooling – from RD&D to deployment technology and policy” aimed at exploring guidelines and policy initiatives to boost technology development and market deployment for renewable heating and cooling (REHC).

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