PCM Applications - Passive Cooling

Passive Cooling PCM

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Passive Occupied Space Cooling

The night-time cooler ambient can be used to charge the latent heat capacity of various “ Positive Temperature Eutectic” solutions between +4 °C (39F) nd+27 °C (80F) without the use of any refrigeration machinery by simply allowing the surrounding air to freeze these solutions. It is then possible later for the stored energy by the Positive Eutectic Thermal Energy Storage “PETES”, to be released back to the occupied space during daytime to handle the heat gains. This technique is generally called Passive Cooling and it may enable the charging process to take place by means of free cooling, i.e. without running the chillers and as a result becomes a very economical and environmentally friendly system. Furthermore, PETES opens new opportunities to explore heat balance for the existing and new systems, which could offer significant overall system efficiency improvements.

pcm passive cooling  pcm passive cooling

COVENTRY UNIVERSITY JOHN LAING BUILDING PASSIVE COOLING APPLICATION (468 KB)         Passive Cooling

South facing architecture study areas and some of the offices were over heating and by simply adding 27C ( 80F) TubeICE at high level within the occupied areas almost all of the sensible heat loads are handled by the passive cooing. As these PCM tubes are static, no moving parts and any power requirements as the cooler night ambient is enough to freeze them naturally, it offered a maintenance and energy free cost efective solution for the over heating issue.

UNIVERSITY OF WESTMINSTER, LONDON, UK, OFFICE PASSIVE COOLING APPLICATION (637KB)      passive cooling

As part of the environmental awareness of the cooling University of Cavindish London campus implemented a passive cooling 27C9 70F) PCM modulss to compliment their VRV system whereby the lead is taken by the energy free passive cooling and any top up latet cooling loads handled using conventional VRV system.

MULBERRY SHOP, LONDON, UK, PASSIVE COOLING ADDITION TO EXISTING A/C SYSTEM (400 KB)    phase change material cooling

Existing Bond Street shop was in an old Listed building  whereby with very little external walls / areas to sufficinet A/C outdoor units so by simple adding the 22C ( 70F) PCM TubeICE banks like a Fan Coil Unit (FCU) set up for the existing A/C system nd rnning the A/ over night using lower ambinet and electricity cost this PCM addio is enabled the designers to shift half of the day loads for the peak summer seasons but also almost 9~10 months of the year using cooler ambinet air to charge these TUbeICE banks without any mechanical cooling i.e. free cooling and this way designers not only solved the physical restriction issue but provided a maintenance free and cost effective technical solution for the building.

THE ROYAL WOLVERHAMPTON HOSPITAL, passive cooling SYSTEM (305KB)      passive cooling

As part of the energy drive and environmetaly friendly option designers applied the TubeICE passive cooling concept to all staff offices whereby the night cooler air charge i.e. freeze the 27C (81F) PCM material and in return during day time heat generated within the room as well as solar gains absorbed by the PCM to keep the office area below the upper high temperaure limits and provided an energy free comfort cooling option not to mention a maintenance free benefits.

SOUTH BANK UNIVERSITY, LONDON, UK LECTURE ROOM DYNAMIC PCM COOLING (400 KB)              passive cooling

Top floor an existing building is converted to have a dynamic passive cooling using FlatICE containers forming an Air Handling Unit (AHU) format with circulation fans and using cooler air air circulation freeze +22C (71F) PCM and once they are frozen during office hours this stored energy is used to handle the sensible loads of the space as a free energy.

LINTON COLLEGE, UK, CLASSROOM PASSIVE COOLING APPLICATION (400KB)                                     passive cooling

One of the main problem of the latest high specification UK schools can be described as the overheating during a few days of the year especially if the building facing south but as this only occurs a few days of the year any conventional A/C would be far to exensive to install, run and most imporatntaly maintain so a simple maintenance free PCM based passive cooling offers a cost effective and environmentally friendly option to over come this over heatng issues.

LINCONSHIRE SECONDARY SCHOOL CLASSROOM AND LECTURE THEATRE PASSIVE COOLING APPLICATION (400KB)

Again like the application above more and more schools are facing over heating occosionally and a simple PCM based passive cooling offers a simple, maintenance free, practical solutiion whch can be installed quickly to any new or retrofit applications. A simplem cost effective and maintenance free PCM based passive cooling can be applied to any existing or new CLASSROOM or LECTURE THEATRES as illustrated in these examples.

Passive Unoccupied Space Cooling

It is imperative to keep electronics under 45 °C (+113 °F) in order to keepsystems functioning. PCM systems freeze over night, even in desert climates, soak heat from the electric circuits, melt and release cool during the daytime.

Electronic Cooling

Performing the role of a thermal shock absorber, the PCM prevents electronics exceeding their critical temperature.

Battery Cooling

PCM packs avoid ambient as well as battery charging and discharging periods overheating issues by simply storing energy during off/cool periods.

Telecom shelter cooling

Telecom Shelters

PCM technology gives extended life to the batteries by keeping the temperature down. Cooler batteries result in longer life and better performance.

Shelter Passive Cooling

The PCM freezes overnight to absorb heat during hotter daylight hours as well as internal heat generation in applications such as remote pump-station control rooms, to provide an electric-free solution.

Telecom shelter cooling

Electronic Back-up Cooling

Many I.T. centres have their power supply backed up by generators or UPS for the computers. Unfortunately, as soon as the power goes off, the temperature rises. The PCM acts like a thermal sponge, soaking the heat from area and offers an electricfree back-up cooling solution.

Shelter Passive Cooling
Shelter PCM Passive Cooling

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