Encontrados 24 documentos, a visualizar página 1 de 3

New test methodologies to analyse direct expansion solar assisted heat pumps fo...

Since there are not specific standards for testing direct expansion solar assisted heat pumps for domestic hot water, new testing methodologies are proposed supported by laboratory experiments. Two methodologies were developed for performance measurement: modified BIN method and long term performance prediction with a TRNSYS model validated with specific experimental conditions. The long term performance predic...

UNISOL: solar combistore evaluation and optimization

In the frame of UNISOL project, a test bench was installed to perform tests of a combistore which includes a two-way heat exchanger already submitted to a national patent application. The present work describes the main characteristics of the test bench installed and the tests performed with the objective of optimization of the configuration of the inner storage tank of the combistore (two way heat exchanger),...

Climatologia e anos meteorológicos de referência para o Sistema Nacional de Cer...

Relatório produzido pelo LNEG no âmbito da revisão do Sistema Nacional de Certificação de Edifícios.

UNISOL: solar combistore evaluation and optimization

In the frame of UNISOL project, a test bench was installed to perform tests of a combistore which includes a two-way heat exchanger already submitted to a national patent application. The present work describes the main characteristics of the test bench installed and the tests performed with the objective of optimization of the configuration of the inner storage tank of the combistore (two way heat exchanger),...

Components of solar thermal systems

The heat production sub-system is the part of the overall system which provides heat to a thermally driven air-conditioning system. With regards to the solar-driven equipment, the solar collector is the main component of the sub-system. A brief review on the present state-of-the-art with respect to performance characteristics and available certification schemes of solar collectors is given in the following chap...

Durability of absorver surfaces in solar thermal collectors

Heuristic algorithm for the piecewise linear segmentation of multiple time-seri...

This paper presents a novel algorithm for the piecewise linear segmentation of multivariate time-series and proposes its application to the analysis of hot water thermal solar systems (TSS). The ISO 9459-5:2007 norm describes a non-intrusive dynamic test for the performance assessment of TSS. This allows to characterize the system heat losses and the thermal stratification properties, as well as to predict its ...

Latest developments in the field of solar thermal standardisation

The European project QAiST-―Quality Assurance in Solar Thermal Heating and Cooling Technology‖ funded by the Intelligent Energy Europe program and by the participating countries, gathers 15 participating organizations including the European Solar Thermal Industry Federation ESTIF and major testing and research institutes in Europe. The objective of the project is to enhance the competitiveness of the European S...

European round robin test on solar collectors and solar thermal systems

Within the European project QAiST (Quality Assurance in Solar Thermal Heating and Cooling Technology)a Round Robin test on solar collectors and solar thermal systems is carried out in the years 2010 and 2011. For two different collector types, one flat plate collector and one evacuated tubular collector with CPC reflector, thermal performance tests according to EN 12975-2 (EN 12975, 2006) are carried out by 12 ...

Assegurar a qualidade em sistemas solares térmicos: certificação de sistemas so...

As aplicações de sistemas solares térmicos são múltiplas. Na gama das baixas e médias temperaturas as aplicações mais comuns são aquecimento de piscinas, preparação de Água Quente Sanitária, Aquecimento ou Arrefecimento Ambiente. Estes sistemas podem ainda ser utilizados na indústria, quer para a preparação de água quente de processo ou aquecimento de outros fluidos térmicos para processos que requerem temperat...