Light-scattering measurement (BSDF, BRDF, BTDF)
For light-scattering measurements of reflectance and transmittance we are using an «Imaging Sphere». In contrast to a Goniophotometer this kind of instrument has the advantage of measuring the spatial distribution of the light in a complete hemisphere within a few seconds, detected by a light density camera. The angle of incidence can be varied from 0° to 80° for reflectance, and from 110° to 180° for transmittance. The angular resolution of the straylight is 0.5°. As an option the measurement can be done with spectrally resolved in the range from 330 to 1100 nm.
Determination of the specific heat capacity (cp) of heat transfer fluids
Our procedure to determine the specific heat capacity of heat transfer fluids is providing an accuracy of ± 0.3 – 0.5 %. This is significantly more accurate than standard values that are declared with an uncertainty of ± 3 – 5 % in data sheets of products on the market. A higher accuracy of these important values increases confidence in your products. This is indispensable for the monitoring of energy balances of heating and cooling applications.
Mobile photovoltaic test laboratory
With our mobile PV test laboratory we run detailed tests and measurements of PV modules on-site. The tests include I/V curves, electroluminescence, infrared imaging and HighPot measurements. The mobile test lab measures in a matter of seconds and delivers resilient information e.g. in case of suspected loss of efficiency or safety-related deficiencies of panels, as well as for general quality checks during operation or as inspection of new panels delivered to a storehouse or on-site.
Walk-in climatic chamber
Our walk-in climatic chamber measures 2.0 m x 2.7 m x 4.5 m (H x W x L) on the inside and can be run at temperatures from – 40 to +85 °C. Moisture can be controlled in the range of 15 to 95% above 7 °C. We can run constant conditions as well as any kind of time dependent profile for temperature and moisture.
Solar Tracker
Several solar trackers are installed outdoors and allow for the testing of components under normal irradiance, including accelerated ageing and depenency of parameters on the angle of incidence of solar irradiance. Fluid circulation loops are available for cooling or heating of the exposed specimen.
Solar Simulator / Artificial Sun
Our indoor solar simulator enables testing of larger objects with predefined and repeatable conditions for solar irradiance and environmental conditions. Examples of application are the testing and optimization of solar collectors and othere elements of the building skin, resistance of materials to extreme conditions of irradiance, infrared imaging of objects under solar irradiance, and many more.
Concise Cycle Test for combi-systems
The Concise Cycle Test (CCT) method is used for the determination of the functionality and efficiency of combined heating systems for domestic hot water and space heating under realistic conditions based on a six day dynamic hardware in the loop test profile.
Find more about this ...
Concise Cycle Test for storage stratification
Since 2014 SPF offers a Concise Cycle Test also fort he determination of storage stratification efficiency under realistic dynamic operating conditions with a 24 hour test profile.
Find more about this ...
System Simulations
The SPF institute for Solar Technology has a long and vast experience in the simulation of complex energy systems with Polysun and TRNSYS. We are not only users of these programs, but also develop our own codes for components, control and systems. Thus, our possibilities go far beyond the tasks a normal user can accomplish.
EES
EES es un programa para la resolución de ecuaciones. Gracias a la interfaz gráfica programable podemos programar aplicaciones específicas para nuestros clientes. (TubeCalc ha sido desarrollado por el SPF en EES).
Accelerated Lifetime Testing (ALT)
Las pruebas de envejecimiento acelerado (Accelerated Lifetime Testing) permiten hacer previsiones acerca de la duración de vida útil esperado de nuevos materiales, como por ejemplo los revestimientos de absorbedores solares, en determinadas condiciones de utilización.
© 2017 Institut für Solartechnik · Oberseestrasse 10 · CH-8640 Rapperswil · Tel. +41 55 222 48 21 · infonospam@nospam spf.ch | Impressum | AGB