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parabolic trough collectors

Combining the strengths of collector technologies

Submitted by Baerbel Epp on July 20, 2018
Task 55 of the IEA SHC Programme is currently studying the benefits of systems equipped with both flat plate and parabolic trough collectors to supply thermal energy to district heating networks. Preliminary results from a project in Taars, Denmark, have been encouraging, indicating how their combined strength can be an asset across a wide range of solar district heating applications. The research is being conducted as part of the Energy Technology Development and Demonstration Programme, supported by the Danish Energy Agency.
Photo: Aalborg CSP

12,000 m² of concentrating solar planned in Brazil

Submitted by Baerbel Epp on June 3, 2018
Photo: RackamA consortium of around 10 companies is planning to build a 12,000 m² concentrating solar plant in Jaborandi, Bahia state, to the northeast of Brazil’s capital. This combined process heat and power system will use parabolic trough collectors (see photo) by Canadian-based Rackam to dry tobacco and generate electricity for an agribusiness. The relevant contracts have been signed and construction is set to start this summer. The plant is scheduled for completion in the first quarter of 2019.
Photo: Rackam

Parabolic trough collector production line shipped to China

Submitted by Baerbel Epp on April 24, 2018
Photo: AbsoliconAbsolicon, a Swedish supplier of concentrating solar thermal technology, has recently delivered its first production line to a Chinese company. The equipment to manufacture parabolic trough collectors, which the Swedish business developed in-house, arrived in China in mid-April. The line is now being set up at Heli New Energy Technology, in the country’s southwestern province of Sichuan. The photo, which dates from December 2016, shows the partners involved in the project after they signed the purchase agreement for the system. Heli New Energy is a joint venture between two Chinese companies, namely Xinkun, a family-owned manufacturer, and Jointeam, an energy project developer.
Photo: Absolicon 

Second winter for 75,000 m² SDH heating system in Inner Mongolia

Submitted by Baerbel Epp on April 11, 2018
Photo: Sohu.comSince October 2016, a 75,000 m² parabolic trough collector field for district heat seems to have been operating in Inner Mongolia, an autonomous region in China. Ruicheng Zheng from the China Academy of Building Research and Hongzhi Cheng said that they had heard about the system, but that all the information on it was only available online. On 28 December 2017, a news article appeared on sohu.com, one of China’s largest online media companies, stating that the system supplied a shopping centre and a development project known as ZhongCheng International City in the village of HongQing De, near Baotou. The journalist who interviewed the owners of the residential buildings and the shopping centre found customers satisfied with the solar space heating that the system provides. 
Photo: Sohu.com

USA: Concentrated Solar Thermal for Biosolid Drying

Submitted by Baerbel Epp on November 9, 2017
RackamSince the summer, two parabolic trough collectors have been drying sludge at a waste water treatment plant in Surprise in the state of Arizona, USA. The test project was developed by US-based Heat2Hydro to evaluate the effectiveness of this solution. The objective is to reduce the water content of the sludge and make it easier to transport. The municipality aims at expanding solar drying capacity to 5 MW thermal in about two years.
Photo: Heat2Hydro/Rackam
 

Italy: 10,000 m² ORC-Connected Fresnel and Parabolic Trough Fields

Submitted by Baerbel Epp on September 19, 2017
Fresnel Collector Field ItalyItaly’s feed-in tariff for medium-size concentrating solar power plants has supported the installation of a 10,000 m² Fresnel collector array in Sardinia (see photo). The mirrors have been in operation since spring this year and are connected to an Organic Rankine Cycle (ORC) unit with 600 kW of nominal electric power. Construction for a second demonstration system, a 5 MWth parabolic trough field linked to an ORC turbine, is currently underway in Sicily. Both installations heat thermal oil to between 250 and 300 °C and use it to transfer heat directly from the solar panels to the ORC units by Italian-based Turboden, bringing their electrical efficiency to up to 25 %.
Photo: CSP-F (FERA Group)
 

Denmark: Concentrating Solar Collectors for District Heat in Northern Europe

Submitted by Baerbel Epp on August 11, 2017
BronderslevBrønderslev, a Danish municipality with a population of 12,500, is setting up a multi-purpose renewable heat plant for their district heating network. So far, local utility Brønderslev Forsyning has been operating seven gas-fired combined heat and power (CHP) plants and two gas boilers to produce 130 GWh of heat each year. In the future, most of the yearly district heating demand is planned to be met by a new Organic Rankine Cycle (ORC) unit which receives its energy from two wood chip boilers with 10 MW each and from a 16.6 MWth parabolic trough collector field with a mirror area of 27,000 m². 
Photo: Aalborg CSP
 

USA: Solar Steam Installation for California’s Pistachio Harvest

Submitted by Baerbel Epp on July 10, 2017
SunvaporCalifornian start-up Sunvapor has found its first solar steam customer for a demonstration system with the Green Parabolic Trough Collector technology developed in-house. In April 2017, it announced that it had gone into partnership with Horizon Nut to install a 50-kW solar process heat installation at the latter’s pistachio processing facility in Firebaugh. Sunvapor’s CEO and founder Philip Gleckman confirmed that the system is scheduled to come online at the end of this year. The fluid heated to 230 °C is said to be used for pasteurising, blanching and roasting pistachios. Horizon Nut is a growers’ cooperative which collectively processes about 70 % of the pistachios in California. The photo shows a laboratory prototype of the parabolic trough collector with the wooden mounting system. This prototype was used to validate the structural model.
Photo: Sunvapor
 

India: Honeywell Successfully Showcases Solar Cooling Project

Submitted by Baerbel Epp on June 9, 2017
HoneywellTypically, lighting and air conditioning account for more than half of overall electricity consumption in India’s industrial offices. As applications in industry have been hit with the highest tariff of all power consumers, it will need new solutions to reduce the electricity demand of conventional AC systems. To this end, Honeywell Technology Solutions based in Hyderabad in the southern state of Telangana has been operating a pilot project for solar thermal cooling since March 2013. The lithium-bromide chiller is connected to 128 parabolic trough collectors, each with a reflector area of 6.41 m², and provides air cooling at temperatures between 21 °C and 23 °C for six months a year. The collectors were delivered by the solar energy division of Indian manufacturer Thermax. 
Photo: Honeywell Technology Solutions
 

China: Vicot Solar Systems Provide Heat at Siemens and Procter & Gamble Facilities

Submitted by Baerbel Epp on March 6, 2017
THVP SiemensWith Procter & Gamble and Siemens subsidiary Trench, Vicot Solar Technology has two prominent references in China to showcase the successful integration of solar heat into industrial processes. The plant at Trench High Voltage Products (THVP) in Shenyang (see photo) came online in November 2014 and has since been operated by THVP itself. Backed up by an oil heating unit, the system’s parabolic trough collectors with 3,255 m² of aperture area provide heat at 150 °C for processes in the electronics factory and supply the heating systems of the 33,000 m² office and the production facilities in winter.
Photo: Vicot
 

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