What is the packaged?
Packaged units or rooftops are mechanical equipment that are used to control the temperature, humidity and air pressure of the indoor space or with the strategy of improving and restoring the air quality and temperature of those parts according to the type of use.
Relation of the packaged units with the air conditioner or air conditioner
Packaged Unit and Roof Top Unit are a type of air conditioner. It is equipped with a single, double or triple condensing refrigeration cycle (Condensing Unit) and provides the cooling load of the building in the hot months of the year. If the heat pump technology is available in the air conditioner or air conditioner, they produce heating in the cold months of the year by using the compression cycle. They also use electric, water or steam heating coils to supply the building’s heating load (generally in medium to large commercial buildings).
The main purpose of Rooftop devices is to ensure comfortable conditions for residents, which is achieved by managing temperature, relative humidity and indoor air cleanliness. Also, using this solution eliminates the need for a central engine room and reducing the space of the engine room
.
Compression packaged unit structure
Their ventilation section, which is used for the following:
- Treatment
- Heat Transfer
- Heat Recovery
- Air Quality
- Humidification
- Evaporative Cooling
It has a compact or advanced modular structure suitable for commercial and industrial use.
Packaged unit structure
Various compressors are used in the structure of the compression cycle according to the amount of cooling. In order to provide cooling in small and medium-sized commercial buildings, they usually use scroll compressors and recently BLDC. But in large commercial and industrial buildings, screw packaged units are usually used, which have high power and more complex technology. In this explanation, we try to make you familiar with the types of scroll package systems, BLDC and their advantages. The advantages of this type of packaged units are not needing a boiler and chiller to provide hot or cold water as a source of heating or cooling. Following that, the engine room and piping facilities and the spaces used for it will also be removed.
Compression packaged unit – features
Temperature control
Packaged units, like air conditioners, have all the necessary capabilities to adjust temperature, humidity, flow rate of incoming and outgoing air, save energy and clean the air. For example, the packaged units control the air temperature at the point of use, usually at the supply point of the air conditioner, the return point or the air exit point outside the building, and the room temperature. In each of the mentioned places, a sensor suitable for that place is installed and its temperature is monitored real-time.
The control system automatically measures the temperature and controls it with closed loop control algorithm (PID).
Humidity control
There are similar facilities for humidity control. After installing the humidity sensor in a place (usually in the ventilation part or in the ROOM) where humidity control is important for the user, the amount of humidity is measured and compared with the set value. If the humidity level is low, the central control system sends a request to the humidifier using the closed loop control algorithm.
Volume flow control
Controlling the humidity of these functions will increase the accuracy of the operation, protect the auxiliary and main equipment of the package unit (such as the condenser fan and compressor or types of filtration beds) and the efficiency of energy consumption in them. These functions are in such a way that in addition to the wide variety and standard performance, the user can activate or deactivate them according to his needs.
Kara Ravesh Saba Company provides various types of compression package controllers to its valued customers as follows:
For more information about Carel Italy products, you can refer to the following link:
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