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Case study - Porsche running for energy efficient cooling

Case study - Porsche running for energy efficient cooling

16-Jan-2018 by: Cristina Piattelli SEELEY INTERNATIONAL EUROPE

The Porsche Centre 
Located in the city center of Kuala Lumpur, Porsche Centre Sungai Besi is constructed on a 1.25 acre plot of
land, with a built-up area of approximately 3,324 square meters. The 3s Porsche Centre Sg Besi is equipped
with state-of-the-art sales gallery, parts and after sales service. The sales gallery has a capacity of displaying up to 18 cars, showcasing the latest Porsche models and a wide selection of pre-owned vehicles while the workshop houses 9 service work bays.
As an effort to improve the thermal comfort in the workshop, an independent environmental study was
commissioned by Sime Darby Auto Performance. The study revealed that the daytime temperature in occupied
areas of the workshop routinely exceeds 32°C, and the 650 square meters’ workshop in the Porsche Centre Sg
Besi is under-ventilated. High radiant temperature of the workshop’s surroundings (roads, roofs and dark cladding of the building) ruled out the use of a mechanical ventilation to maintain a reasonable working condition. The study recommended to adopt measures to improve the thermal comfort, which included increasing the air velocity with big ceiling fans, installation of additional louvers, and also air conditioning the workshop.
The option of Air Conditioning was excluded due to the high initial investment and high running costs. Workshop doors would have to be replaced with expensive high speed roller shutters to retain the cool air inside. In addition the high energy consumption
resulting in high running cost combined with the environmental unfriendly aspect is also why air
conditioning was not an option.
The installation
Although an indirect evaporative cooling system of
this type had never been installed in Malaysia, the Management of SDAP decided to install this innovative cooling concept.
IETCO Sdn Bhd, a product specialist company focusing on energy saving solutions, and official distributors of Seeley International products in Malaysia, evaluated a possible installation, with the cooperation of Mauro Ercoli, Seeley International Sales Manager responsible for the area. After a few surveys, the experts calculated that an Indirect Evaporative Cooling System based on a counterflow heat exchanger (like Climate Wizard) would grant an estimated supply air temperature of 25-26°c into the workshop. They evaluated the need of 5 Climate Wizard H15S (Supercool Series), in order to
obtain this result. Convinced of the efficiency of the system, the Management commissioned the project to IETCO Sdn Bhd, provided that the system would have result in an ambient temperature in the workshop of
28 ± 1°C. IETCO Sdn Bhd worked on integrating the ductwork for the new cooling system into customized workstations of the workshop. The target was to keep the changes to minimum and integrate the system as
much as possible.
During the first trial after the installation, starting from an outside temperature of 35°c and 49% RH, the five Climate Wizard installed provided a supply air temperature of 23.5°c, which is well below the temperature targeted by the client. Commissioning was made on 20th February 2017 together with Seeley
International Engineer, Johan Velleman.