HVAC stands for heating, ventilating and air-conditioning. It is usually found within offices, homes and infrastructures built for businesses. Its primary function is for climate and temperature control. As such it is an important factor in the design of medium to large offices, industrial buildings and in marine environments like aquariums wherein humidity and temperature must be closely monitored and regulated to maintain safe and healthy living conditions inside. Hence, it is essential in giving appropriate comfort in any closed living space or quarters.
HVAC is designed mainly to control and adjust room temperature, air flow and humidity so these factors stay within acceptable ranges of hot and cold. By keeping these factors within controllable limits, health related risks are effectively restrained. The starting point of HVAC is not actually clear, although in the early second century, Roman cities were using a centralized heating system called hypocaust. HVAC continued to gain recognition at the time of the Industrial Revolution since large factories made use of it. At present most modernized buildings have built-in heating, ventilating and air-conditioning systems.
The heating function of an HVAC is essential in order to maintain a stable room temperature especially during the cold winter season. The heat can come from an electric or resistant heating conductor that uses a filament which becomes hot as electricity passes through it. Ventilation is connected to the movement of air, and while there may be a number of ventilation types, the function of each is mostly similar. Ventilation is necessary to permit carbon dioxide to escape from a confined space at the same time it allows oxygen to get in which ensures that people within the confined living spaces are breathing in fresh air. The air-conditioning system generally comes in different forms and sizes that control heat and ventilation systems.
Temporary HVAC
HVAC systems are part of our daily life at home and at work, as this equipment and units regulate temperature to become bearable, making the surroundings more comfortable. To some degree, it is quite difficult to visualize what life was like prior to or what it would have been if the HVAC system was not invented respectively.
In situations where the HVAC system goes down or is incapable of handling your needs, it is recommended that you use a temporary HVAC unit that can fill in the gaps until such time that a permanent solution has been established for your HVAC requirements. Temporary HVAC are usually kept on hand by large companies and big corporations for emergency purposes.
A temporary HVAC has many uses and is everyday equipment which familiar with almost anybody. It is used to cool down or heat up a particular place. It is likewise utilized for extreme weather conditions where it is necessary to allow the possible continuation of work, like in a tunnel where crewmen are working. The place below tends to get very hot and HVAC is used to cool it down.
Significantly, a temporary HVAC can be used during emergencies that involve life-saving circumstances. As such, they come very handy in almost all situations. This system is generally used to provide an individual’s heating and cooling needs and is made the most of in offices, homes, hospitals and industrial buildings. Hospitals need temporary HVAC so they can continuously give health care to those in need who may be in their intensive care units or operating rooms. Schools which conduct classes need to cool their rooms during hot summer months and heat them up when cold winter months start to roll in. More importantly, residential home owners need temporary HVAC in times of natural disasters and calamities where the common source of electric power may have been damaged.
As majority is dependent on the presence of a temporary HVAC to attain relief from extreme weather conditions, its breakdown results to big financial losses for commercial businesses that will definitely affects the productivity of the whole industrial sector.
Types of Temporary HVAC
Being an important part of daily living HVACs have many uses. Temporary HVACs are accessible for purchase or rent. Although there are quite a few aspects that need consideration before renting and purchasing a temporary HVAC unit, and being able to use them correctly and safely. First you have to check out some HVAC system providers and talked to them or visit their office so you can have a basis for your decision which company is most appropriate to provide the service which suits your specific needs. Getting in-touch with three or four HVAC service providers will allow you to make a good decision on your rental or purchase. Ask for references and be sure to call and check them out if any of their past customers had any problems with the equipment and service given by a specific service company. And provided they had problems, was the service provider able to give appropriate solutions?
In hospitals and medical centers, a particular type of HVAC unit is more appropriate than others. This particular kind of temporary HVAC must be able to provide the required cooling and heating needs of the entire hospital. It must be considered that hospitals need to maintain an Indoor Air Quality. Therefore, a qualified service provider who has previous experience in such situations would be able to establish said factors. But it is likewise significant to state that infection control is very important and high on the list of every care setting. Hence this must also be considered in the provision of a temporary HVAC.
Another type of HVAC is needed for school and other educational settings that have to continue their lectures and classes throughout the whole year. While indoor air quality and infection control is the priority consideration for health care settings, schools need to protect their students and teachers alike from the extreme heat and cold temperatures of the outside environment that primarily depends on the season aside from also considering air quality within their establishments.
A different type of HVAC units is likewise needed to be utilized in a specific event which could be indoors or outdoors. Just make sure to inform the service company how many hours or days the events is scheduled for, and where it is exactly to take place. An experienced and professional HVAC contractor can provide the needed heating and cooling of a particular place, given that he is provided with the actual measurements and expected capacity of the event in question. Also to be taken into consideration will be the presence of heat and cooling devices or system present in the event location. Cooling requirements will be minimized if the event will take place at night. Mostly the adjustment of the temperature will depend on the hotness or coldness of the outside environment and what the current season is – whether it is summer or winter.
Three Types of Temporary HVAC Equipment
Three types of temporary HVAC units come in the form of generators, chillers and boilers. Homes and businesses may opt to engage the services of temporary power generators if power is expected to be out for a considerable length of time. Most temporary power generators are normally used for post disaster situations. The generators are used to provide thermo regulation and lightning. In addition, it is primarily utilized to help preserve foods which are kept in refrigerators and freezers.
1. Generators
Temporary power generators have different bran names, capacities and model. While others are towed because of their large sizes, some are portable and small. Some can run for a day or a couple of days and others can provide power for a small number of hours only. All are either powered with gasoline or diesel. Majority of rental service companies who provide power generators give start-to-finish power generation services. Personnel can also be made available to operate the equipment for the duration of its hire at the request of the customer. Although it can also be that the provider can teach the client on how to operate and maintain the generator safely over the lease period if a personnel is not needed.
Depending on the convenience of the client, some temporary power provider has the options of delivery and restoration which also includes client pick-up and return services.
2. Chillers
HVAC chillers are refrigeration type systems that give cooling service for commercial and industrial businesses. Oils, water and other fluids are used as refrigerants. HVAC chillers are composed of a condenser, compressor, evaporator, thermal expansion valve and stabilization assembly. Compression of refrigerants gives off high pressure super heated gas that is cooled off the condenser to a warm liquid. The TXV or thermal expansion valve then releases the refrigerant into the evaporator which converts the warm liquid to a dry cool gas.
HVAC chillers have varying specifications for cooling, condensing and process pumping as there are lots of condenser cooling methods. Specifications for cooling usually include cooling capacity, compressor horsepower and fluid discharge temperature. The usual measurement for cooling capacity is done in tons of refrigeration or kilowatts.
3. Boilers
A boiler is a pressure container or vessel where water is heated in order to give off heat somewhere for something. Boilers come in many forms; among them are steam boilers and hot water boilers that emit high and low pressures.
Those who are familiar with and use boilers say that they like the heat given by boilers, whether they are from steam boilers or water boilers. There are various kinds of heat – dry heat, wet heat, drafty heat, etc, so it is essential to have an appropriate HVAC boiler maintenance and system tune ups for different combinations and configurations of boilers.
