Controlling and maintaining the indoor environmental parameters within predetermined limits depends mainly on adequate equipment capacity and the quality of the control system. HVAC&R system control is a decisive factor in system performance. Many of the troubles with HVAC&R arise from inadequate controls and/or their improper use.
Here at GCE-Group we have all the necessary knowledge and means to perform testing and balancing of all systems, functional testing and adjusting of components and the integrated system, and adjusting and tuning the direct digital controls. An air conditioning system is different from the manufacturing products having models and prototypes. All the defects and errors of the prototypes can be checked and corrected during their individual tests, but the more complicated HVAC&R system, as constructed and installed, is the end product. Therefore, proper commissioning, which permits the system to perform as specified in the design documents, is extremely important.
Energy efficiency must be achieved in every stage of HVAC&R system construction and operation: design, construction, commissioning, and daily operation. A well-designed and effectively functioning building management system is necessary for an energy-efficient HVAC&R system. In principle, adopting an integrated design approach by considering the building as a whole, minimizing heating and cooling loads, selecting high-efficiency equipment sized as closely to the design load as possible, emphasizing commissioning, and optimizing operation promote energy efficiency (energy conservation) in buildings. We offer complete system design solutions that meet your project requirements.
graphics and programming
Our primary goal is always to provide the required functional controls with satisfactory system performance. Graphics play a small role in increasing the effectiveness of any functional control in a building management system. However, they enable the user to interact more efficiently with the data and information from the BMS and to make proper decisions to operate the BMS and the associated HVAC&R system effectively and efficiently.
- Building floor plan graphics show the selected floor plan and the space temperatures.
- Equipment graphics are provided for each major piece of equipment such as packaged unit, airhandling unit, and chiller with status of all points.
- Schematic graphics show the detailed system drawings which can be created, modified, and saved
tune up and quality control
In BMS system design, quality means functionally effective, for health, comfort, safety, energy conservation, and cost. Quality also implies the best job, using accepted professional practices and talent. Better quality always means fewer complaints and less litigation. We make sure that your building management system performs as it was designed to. Small and seemingly unimportant errors in the programming can lead to an inefficient operation and failure of the whole system. With our tools for fault detection and diagnostics we monitor the operation of HVAC&R equipment, components, and control devices; analyze the data; and identify performance problems to be corrected. Our experts provide you with the peace of mind that all processes are running smoothly and uninterrupted.
A properly designed and installed BMS needs commissioning to test and tune its controllers and system components according to the design specification. A sufficient, clear, and well-followed operations manual and a well-implemented maintenance schedule are key factors for an effective and efficient BMS. The capacity of equipment, the air and water balance, and the coordination between various components and control systems should be carefully measured, adjusted, and commissioned. A poorly commissioned HVAC&R system will never function efficiently as specified.
In HVAC&R operations, faults occur when the actual measured operating parameters deviate from the normal operating values. There are two types of detected faults: complete failures and performance degradations. Complete failures are abrupt faults that often cause discontinuation of the operation of a system or component. Symptoms of abrupt faults can be easily observed. Peformance degradation is the result of an evolving fault accumulated during a certain time. The energy use for chillers, compressors, fans, pumps, boilers, and furnaces should be monitored, periodically checked, investigated, reduced, and improved.
Modern air-handling units (AHUs), packaged units (PUs), and chillers become more and more complicated because of the thermal comfort and energy efficiency requirements, and the use of DDC. An HVAC&R operator is hardly able to monitor and detect the fault operations of the AHUs, PUs, and chillers; find their causes; and correct them. We specialize in detection and diagnostic of system issues as this is important for the effective operation and control, for the monitoring and maintenance, and for the optimizing of utilization and continuous improving of the HVAC&R systems .