Hotel Holiday Inn
Analysis of the PreCooling project of the Holiday Inn Hotel
Georgia, Tbilisi, 27.07.2019.
Object: Hotel Holiday Inn
Address: 14, Kostava Street, Tbilisi, Georgia-0108
Due to the hot summers, the Holiday Inn had an air conditioning problems. At an outside temperature of + 33 ° C, the chiller could not provide the necessary cooling parameters. Therefore, it was decided to install Pre COOLING adiabatic evaporation panels.
The installation of the PreCOOLING system was started on July 18 and completed on July 23, 2019.
Cooling equipment - DAIKIN EU BL EWADC14BJYNN
Colling capacity – 1400 kW
Electricity Consumption - 400 kW
Climate data:
Outside temperature: +37°C
Atmospheric humidity: 45%
When starting the PreCooling system, a performance check and fixed data were performed
The laser-type device recorded temperature measurements on the surface of the chiller condenser, i.e. shown in the pictures below.
Turned OFF PreCooling system
Turned ON PreCooling system
Chiller data:
Condenser Surface Temperature: +46.2°C
Chiller Fluid Return Temperature: +12.3°C
Output liquid temperature: +10.0°C
Result after starting PreCOOLING:
Condenser Surface Temperature: +26.9°C
Return chiller fluid temperature: +08.2°C
Chiller fluid outlet temperature: +06.6°C
Schneider Electric
The operation of the PreCooling system was launched in May 2011.
Cooling equipment - YORK YCAM 400
Colling capacity – 390 kW
Installing the PreCooling Adiabatic System and Comparing Electricity Consumption Data by 2010 shows that the energy savings of electric energy are 31% and the increase of cooling capacity is 29%.
What does Schneider Electric customer says about PreCooling panel.
This project is aimed at reducing of the energy consumption of air conditioning equipment, which in summertime at high temperatures have increased by 20 -30 %.
By installation of Pre-cooling panel on The York cooling equipment, we have made monitoring of energy consumption.
Upon evaluation of data summarized in the monitoring, we have found: the cooling device significantly improved the efficiency and electricity consumption has been reduced by 31%.
We are satisfied with results provided by air Precooling panels.
We recommend that PreCooling panel to be installed also for other enterprises to reduce energy consumption and increase the efficiency of air conditioning equipment.
Philip Morris
The operation of the PreCooling system was launched in May 2014.
Cooling equipment – chiller Carrier 30XA 1702
Colling capacity – 1616 kW
Considering the fact that summer period of 2014 was not that hot, the figures regarding the operation of the chiller look very convincing. The energy saved thorough the operation of the chillers with Pre Cooling panels comprises a total of 92000 kWh.
Testimonial:
About the operation of a Carrier 30XA 1702 chiller with PreCooling panels.
In September 2013 , Pre Cooling panels were installed and commissioned a factor operated by the “Philip Morris Ukraine PLC within the boundaries of the implementation of an energy saving program.
We have verified the actual efficiency of the usage of these panels in 2014. According to the meter readings acquired during the period of May 2014 to September 2014, the energy saved thorough the operation of the chillers with PreCoolig panels comprises a total of 92000kW/h.
Considering the fact thet summer period of 2014 was not that hot, the figures regarding the operation of the chiller look very convincing. Therefore, we do plan on instlling similar pnels on another chiller similar to this one in 2015.
In the opinion of the experts working for the technical departament of the “Philip Morris Ukraine” PLC, the PreCooling panels are a worthy alternative to “wet typ cooling plats from the statioint of improving the performance of a refrigeration supply systems
Premier palace Hotel
The operation of the PreCooling system was launched in June 2013.
It was figured out that for the season from June to September 2013 the Premier Palace Hotel saved 320000kW/H – 24% and significantly improve cooling efficiency by 29%.
Letter of recommendation
At high ambient temperatures the cooling equipment operates at the limit and consumes maximum power of electricity, which greatly affected the overall financial expenditures of the hotel.
The aim of purchasing the adiabatic Pre Cooling panel: to reduce power consumption and increase efficiency in cooling equipment.
After start-up of the adiabatic Pre Cooling panels equipment by means of monitoring by the hotel staff of PJSC “Hotel” Premier Palace” and PJSC “Kyivenergo” of the data on electricity consumption, it was figured out that for the season from June to September 2013 the Premier Palace Hotel saved 320000kW/H – 24% and significantly improve cooling efficiency by 29%.
We will be glad to recommend equipment, adiabatic PreCooling panels.
Arena Riga
The operation of the PreCooling system was launched in May 2013.
Cooling equipment - chiller York, and dry cooler Alfa Laval
Colling capacity – 556kw
In average cooling capacity increased by 23% and the electrical energy consumption of equipment decreased by 21%.
The technical task of cooling equipment is to keep the constant temperature of the ice in the arena. Thus, the PreCooling adiabatic system was built as a solution. Taking into account the climate-specific cooling capacity according to LBN standards is calculated up to + 27 ° C with maximum cooling load. Due to the rise in climate temperature, the cooling equipment is overloaded. When installing the PreCoolig system, the cooling units run in normal mode even at + 39 ° C what was fixed on a sunny day on the roof. By cooling the air at the cooling unit, we provide the air temperature down to 17 ° C. This means that if the outdoor air temperature on the roof reaches + 40 ° C, lowering the incoming air temperature at the condenser by 17 ° C, we ensure that the cooling equipment unit works in the climate at + 23 ° C. At this temperature, the cooling equipment works without overloading. The cooling capacity was increased to 23%, the electricity economy reached 21%.
SEB Bank
The main building of SEB Bank of Sweden, in Riga
The operation of the PreCooling system was launched in May 2013
Cooling equipment – chiller AIRVEL
Colling capacity – 1120 kW
Installing the PreCooling Adiabatic System and Comparing Electricity Consumption Data by 2011 shows that the energy savings of electric energy are 31% and the increase of cooling capacity is 29%.
The main building of Sweden’s SEB bank was built in 2004. Cooling system workloads are calculated according to LBN standards, which are +27 ° C atmospheric temperature.
Cooling equipment is located on the roof, enclosed between the costumes of the building, which means that when the roof is warmed up during the summer hot days and in the open, the cooling equipment is overloaded. Work overload is also caused by rising temperatures. An inspection of the object showed that during the peak hours the air temperature at the cooling equipment reaches up to +35 ° C.
SEB Bank's engineering communications are serviced by international company YIT Serviss.
YIT Serviss engineers supported the PreCooling system's technical characteristics and decided to build it.
Pre Cooling system was built in 2012 and the following results were obtained during monitoring, electricity consumption decreased by 23%, cooling capacity increased by 25%.
With PreCooling adiabatic panels, we were able to lower the air temperature from 10 ° C to 13 ° C, which means that the cooling equipment is operating in a climate with temperatures as low as 22 ° C.