– We are an engineering company
– We provide engineering solutions to meet the requirements of the customer
– We design and build with a strong engineering discipline
– We produce high efficiency units
– We can exceed efficiency requirements
– We use environmentally friendly refrigerants
– We can build units with ultra low noise generation
– ISO 14001 Certified
– Incorporate environmentally friendly practices
Air Conditioning, Heat Pump and Refrigeration systems affect the environment and the ozone layer through the release of refrigerants into the atmosphere and also through the release of carbon dioxide when generating the power for operating the system through its life time.
To reduce the impact of HVAC Systems on the Environment; Petra has replaced ozone-depleting hydro-chlorofluorocarbons HCFCs (R-22) by Hydrofluorocarbons (HFCs) (R-410A, R-407C and R134a Refrigerants, Ozone Friendly), Petra produces highly efficient products to reduce the electrical energy consumption for its units, thus helping to protect the environment
Energy efficiency requirements are becoming more rigorous with the growing concerns for environmental and economic sustainability. Around 70 percent of energy usage and 63 percent of greenhouse gas emissions are estimated to be contributable to heating, cooling and ventilation. HVAC typically accounts for 40-50 percent of the total energy bill for businesses and commercial buildings. Properly selected energy efficient HVAC equipment can significantly reduce energy costs and meet environmental standards.
Petra Engineering Industries provides a wide range of solutions that incorporate the latest technologies that facilitate energy saving requirements and enhance indoor air quality and occupant comfort requirements.
(VWV) Technical Features:
The following LEED Credits:
Petra’s VAV systems utilizing communication controllers on VAV terminals enable digital communication between the unit controller and the central building automation system.
The result is a system that can be monitored from a central point، offers control flexibility، and enables system-optimized control strategies.
Buildings can be controlled more intelligently due to the data (such as airflow، damper position، fan، and heat status) being available to perform complex system-control strategies and diagnostics from a central monitoring station.
Energy saving is accomplished through air volume reduction and reduced fan energy consumption at part load conditions. In addition، VAV systems provide multi zone independently controlled spaces (independent thermostats) that accommodate varying levels of comfort..
Exceptional SEER has been demonstrated through Petra’s VAV rooftop package with air side economizer installed on numerous projects worldwide. The reduced annual power consumption of Petra’s VAV rooftop package from a case study conducted for a 500،000 ft2 retail shopping mall indicates a SEER of 15.4.
Petra’s VAV rooftop package unit with economizer contribution to LEED.Assists in fulfilling the prerequisites and earning points for the following Credits:
Energy and Atmosphere Prerequisite 1 (EAp1) Fundamental commissioning of the building energy system
This device proposes a rotating surface composed of small aluminum cells, which transfer sensible energy (hot or cold air). When desiccant is added to the aluminum cells, the heat wheel transfers both sensible and latent energy (moisture) from one air stream to the other.
This type of heat recovery relies on the thermal conduction for energy recovery. It consists of alternate aluminum layers of plates separated and sealed and this type is limited to sensible energy recovery. When the plate exchanger is composed of layers of polymeric membrane sheets, the plates allow also moisture to be transferred from one air stream to the other
This type of energy recovery utilizes two coils filled with refrigerant. The energy transferred from supply/exhaust air by changing the phases (liquid/vapor) of the refrigerant inside the tube without pumping force.
This entire process of pre-cool and reheat is accomplished with no additional energy use. The result is an air conditioning system with the ability to remove 50 to 100% more moisture than regular systems