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Room cooling

Room cooling

Room cooling

Product catalog summary
Introduction
This guide provides detailed information on room cooling techniques, focusing on efficient and effective cooling methods, capacity calculations, and practical tips for optimal air conditioning.
Cooling Capacity Calculation
Calculating cooling load is complex and often requires professional input. A general guideline is 30 watts per cubic meter of room volume. For example, a 35 m² room with a 2.5 m ceiling height requires approximately 2,625 watts. Actual needs may vary based on insulation, window size, and occupancy.
Factors Affecting Cooling Requirements
Factors such as poor insulation, high occupancy, large windows, and south-facing walls can influence cooling capacity needs. Attic rooms or poorly insulated spaces may require up to 60 watts per cubic meter.
Cooling Techniques
Various systems include monobloc and split units. Monobloc units are compact and easy to install but may lose efficiency. Split units offer better energy efficiency and quieter operation but require ventilation.
Practical Tips for Effective Cooling
Continuous operation of air conditioners can prevent heat accumulation. Planning for additional capacity can accommodate variable conditions like increased occupancy or heat waves.
Conclusion
Choosing the right cooling system depends on individual needs and room conditions. Understanding cooling technology principles and practical aspects can lead to more effective and efficient room cooling.
Introduction
This document provides an overview of air conditioning and cooling technologies, focusing on specifications, efficiency, and suitability for various environments. It compares air coolers and air conditioners, highlighting their operational principles and effectiveness under different climate conditions.
Room Temperature Recommendations
To avoid increased energy consumption and potential health issues, it is advised not to excessively cool room temperatures. The recommended room temperature should be about 3°C below the outside temperature, but not more than 5°C.
Two-Hose Technology
Devices with two-hose technology are more efficient than one-hose devices, allowing for pressure-tolerant recirculation without drawing warm air from outside, though they require more installation work.
Productivity and Temperature
Human productivity is optimal at 20°C, decreasing significantly at higher temperatures. German workplace regulations stipulate that office temperatures should not exceed 26°C.
Adiabatic Cooling with Air Coolers
Air coolers, such as the PAE series from Trotec, use adiabatic cooling, a natural and cost-effective method suitable for smaller rooms and moderate temperature differences. Efficiency depends on ambient humidity and temperature.
Efficiency of Air Coolers
Air coolers are most efficient in hot and dry conditions but less effective in humid environments, as they increase room humidity, reducing cooling capacity. The cooling effect is limited to a few degrees Celsius.
Comparison with Air Conditioners
Air conditioners, such as those in the PAC and PT series, offer greater temperature differences and dehumidify the air, making them more effective in humid conditions. They require more installation effort and have higher costs compared to air coolers.
Decision-Making Aid
The choice between air coolers and air conditioners depends on intended use, personal requirements, and budget. Air coolers are cost-effective and easy to install but have limited cooling capacity. Air conditioners provide more substantial cooling and dehumidification but at a higher cost.
Conclusion
The document concludes with a comparison chart summarizing the differences between air coolers and air conditioners, aiding users in making informed decisions based on specific needs and environmental conditions.
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Catalog excerpts

Room cooling-1

PRACTICAL KNOWLEDGE GUIDE ROOM COOLING EVERYTHING YOU NEED TO KNOW!

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Room cooling-2

THERE ARE MANY POSSIBILITIES FOR COOLING ROOMS. WE WILL SHOW YOU WHAT TO WATCH OUT FOR SO YOU CAN ACHIEVE YOUR OBJECTIVE QUICKLY AND EFFICIENTLY. PRACTICAL KNOWLEDGE CONCERNING AIR CONDITIONING INFORMATION REGARDING THE PRACTICE-ORIENTED CALCULATION OF THE REQUIRED DEVICE PERFORMANCE AND THE TECHNOLOGY EMPLOYED BY DIFFERENT COOLING SYSTEMS Which cooling technique? Monobloc or split unit, one-hose or twohose technology, evaporation cooler or refrigeration system? If you are looking for the ideal device to provide refreshingly cold air in rooms with high temperatures, you may easily lose track...

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Room cooling-3

Rough calculation of the required cooling capacity in due consideration of the room type and how it is used: W 30 watts per cubic metre for ideal-typical standard rooms provided with passive house insulation, normal sized window area and little frequented Additional 10 watts per cubic metre if there are more than 3 individuals in the room Additional 10 watts per cubic metre if the size of the window area exceeds the average 50 watts per cubic metre for rooms in attic flats Especially in case of attic flats in old buildings determining the required cooling capacity remains a difficult task due to...

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Room cooling-4

Refrigerant circuit Warm air EXPANSION VALVE MOBILE AIR CONDITIONING SYSTEMS – CONVENIENT REFRIGERATION SYSTEMS Some basics about cooling technology for a better understanding: Unlike air coolers, all air conditioners of our PAC series cool the room air with the help of a powerful compression refrigeration system. A refrigerant is led through two heat exchangers – a condenser and an evaporator. By means of a compressor and an expansion valve, the refrigerant is exposed to changing pressures within this closed cir- cuit, which results in the gas heating up during compression and cooling down during...

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Room cooling-5

Similar appearance, different technology: Air cooler PAE 25, monobloc air conditioner PAC 2010 E and split air conditioner PAC 4600 (FLTR). Practical tip: Even if it were possible with the device used, the room temperature still should not be cooled down excessively. This would not just unnecessarily increase the energy consumption, common colds during the summertime are in part also attributed to a “cold-shock response” upon entering a chilled room. We therefore recommend to adjust the room temperature to a level of about 3 °C below the outside temperature – however by no more than 5 °C. MONOBLOC...

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Room cooling-6

ADIABATIC COOLING WITH MOBILE AIR COOLERS The physical principle in short: In order to evaporate, the water requires energy. This energy is extracted from the ambient air in the form of heat, which makes the air cooler. It is important to note that the energy stored in our room air can be divided into sensible (or perceptible) heat and latent (i.e. hidden) heat. The highlight: only the sensible heat is temperature-relevant and can be measured with a thermometer. Since this sensible heat is consumed during evaporation and then stored as latent energy in the water vapour contained in the air, the...

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Room cooling-7

COMFORT CHART (according to Leusden and Freymark) With a difference of 10 to 18 °C between the incoming and exiting air at the device, air conditioners of the PAC and PT series produce far greater temperature differences than air coolers which generally can attain no more than 1 to 3 °C difference. Seeing as the room is constantly supplied with warmth at the same time - be it through walls or door gaps - the room air can, on balance, be cooled down by approx. 4 to 15 °C using compressor-operated air conditioners - as usual depending on the applied model as well as on the climatic conditions in...

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Room cooling-8

Grebbener StraBe 7 52525 Heinsberg Germany Phone +49 2452 962-400 Fax +49 2452 962-200 [email protected] www.trotec.com Practical knowledge concerning air conditioning Monobloc or split unit, one-hose or two-hose technology, evaporation cooler or refrigeration system? If you are looking for the ideal device to provide refreshingly cold air in rooms with high temperatures, you may easily lose track of things in view of the manifold options and techniques. Benefit from the comprehensive overview of the device differences, functional principles and possible applications provided in this brochure....

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.