EcoCooling

1. EcoCooling

2. GSM sites Cooling systems description Standard Air Conditioner System Emergency Cooling System Energy Saving Cooling System • Air Conditioner Cooling system – is standard cooling system which uses split system for cooling of all equipment inside of system room. • Main task – permanent cooling of room • Consumed power 1 – 2 kW/h • Life time 2 – 7 years • Emergency Cooling system – is FAN cooling system, which has emergency application and mainly used for overheating protection of equipment inside of system room. • Main task – overheating protection • Consumed power 0 - 30 Watt/h • Life time >5 years • Energy saving Cooling system – is combined cooling system which proposes • Energy saving, • Air conditioner life time increase • Overheating protection. • Main task – energy saving and overheating protection • Consumed power 30 Watt/h • Life time >5 years

3. EcoCooling System general description and Advantages • EcoCooler – is energy saving solution with adaptive emergency cooling function for GSM sites (container/system room types). • EcoCooler provides the universal low-cost algorithm of system room cooling which realizes the next main • ADVANTAGES: • Energy saving. • The Cooler control unit provides the cooling of system room by way of choosing the optimal “Cooling Device” on the base ofthe following “Inside” and “Outside” room temperature. Thus, if outside temperature less than required inside temperature the EcoCooler provides cooling by Fan Cooler. In this case System will have consumed power of cooling system less more then 40 times. Forthe standard container BTS site with split Air Conditioner system 1200 BTU the consumed power by cooling system in one hour consist approximately 1 kW thus in case of usage EcoCooler we will have economy 20 – 24 kW per dayor 600 – 720 kW in month in winter time (outside temperature near zero). • Air Conditioner life time increasing. • As a result of usage of additional cooling system (Fan Cooler) the EcoCooler provides the life time increasing for the standard Air Conditioner. According to calculation in case of EcoCooler usage, the life time of Air Conditioner will be increased up to 30%. Besides, in winter time when outside temperature less then -5°C the usage of standard split Air Conditioner has in result increased wear-out of mechanical part of Air Conditioner (mainly compressor). Thus EcoCooler usage assists in protection of Air Conditioner during the winter time and we will have extra lifetime increasing. • Equipment overheating protection. • The EcoCooler provides adaptive emergency cooling function which realizes the emergency cooling of container in case of AC power absence or malfunctions of the main cooling system (Air conditioner or Cooler Fan). Thus in case of EcoCooler usage we will have BTS and Empower equipment overheating protection and backup batteries overheating protection that will allow to increase time to their life.

4. Emergency Cooler system Unit description • At the initial stage we suggest to use simple version of EcoCooler – Emergency Cooler. This system will carry out functions of • Emergency ventilation and cooling provision in case of absence AC power or malfunctions of the Air conditioner (overheating protection). • Control unit of Emergency Cooler executes continuous checking of temperature inside of system room and in case of overheating it will switch “ON” Fan cooler (placed inside of system room) for emergency cooling. • Emergency Cooler provides next main positive functions: • BTS overheating protection. • Backup battery overheating protection, thus provides battery's life time increase. • Has the same platform with Full EcoCooler and because of this can be upgraded up to the Full EcoCooler in future. • Basic characteristics: • Operating Voltages: 24- 60 V (DC) (connection to EmPower) • Cooler Fan Airflow: 550.0 CFM (max) 15.6 m3/min. • Use one “1-Wire” digital thermometers for inside temperature measurement. • Measures temperatures from -55°C to +125°C. • Power supply max. - 30 Watts. In idle mode < 1Watt. • Has one external alarm “Overheating”. • Has internal diagnostic and “Error” indication. • Emergency mode activation temperature +26°C (programmable) • Emergency mode deactivation temperature +22°C (programmable)

5. Energy Saving Cooler systemUnit description • The EcoCooler Unibox control module has CPU core and peripheral interfaces which provide realization of all main functions of EcoCooler and also has capability of extra functions addition in future. • EcoCooler provides next main positive functions: • Energy saving. • Air Conditioner life time increase. • All Equipment overheating protection. • Basic characteristics: • Operating Voltages: 24- 60 V (DC) (connection to EmPower) • Cooler Fan Airflow: 550.0 CFM (max) 15.6 m3/min. • Uses 2 “1-Wire” digital thermometers for temperature measurement. • Measures temperatures from -55°C to +125°C. • Power supply max. - 40 Watts. In idle mode < 1Watt. • LCD display for operation mode indication. • Has internal diagnostic and “Error” indication. • Has USB interface for End user programming • Has Upgrade function

6. Begin Fan = OFF AC = OFF Check Mode Yes tin < ACconst? 22oC Norm/Fan Norm/Idle Fan = OFF AC = OFF tin > ULconst? 26oC tout < ACconst? 22oC tin < ACconst+1? 23oC tout  Toutconst? 18oC No Other Emergency Mode Yes Norm/Fan Other Check Mode No Norm/AC Check Mode Emer/Fan Emer/Fan Fan = ON AC = ON Emer/AC Fan = ON AC = ON Other No Fan = OFF Yes Normal Mode Yes No No Yes Norm/Fan Fan = ON AC = OFF Norm/AC Fan = OFF AC = ON Energy Saving Cooler system Unit algorithm EcoCooler has 5 operation modes: Normal/Idle – in this mode Air Conditioner and Cooler Fan are switched “OF”. Inside temperature rate is enough for equipment’s normal work Normal/Fan – in this mode Air Conditioner is switched “OF” cooling is performed by Cooler Fan. Normal/AC – in this mode Cooler Fanis switched “OF” cooling is performed by Air Conditioner. Emergency/Fan – this mode appears in case when the system works in Normal/Fan mode and Airflow from cooler fan not enough for cooling. Emergency/AC – this mode appears in case when the system works in Normal/AC mode and cooling from Air Conditioner not enough for normal temperature inside of room or AC is broken. EcoCooler has 3 main programmable constant : ACconst– Air Conditioner preset temperature (can be checked from AC remote control) ULconst– Up limit constant of inside room temperature for emergency mode (+26°C by default) Toutconst– Up limit constant of outside temperature for Normal/Fan mode (+18°C by default) tin – temperature inside of container tout– outside temperature

7. Sample Model Of Installedenergy saving EcoCooler 1 3 Output hole Input hole with filter Outdoor thermal sensor Control logic and Fan cooler installation EcoCooler control unit Air Conditioner switch relay + FES relay Input hole Power connection to EmPower 2 4 5 6 7 8

8. Installed EcoCooler-KH0116 Energy saving Istatistical analysis P.S: DURING OUTSIDE TEMPERATURE NEAR 0 ECOCOOLING SYSTEM BALANCING 80-90 % INSIDE TEMPERATURE TAKING FROM OUTSIDE COLD AIR AND SWITHC OFF AC.

9. EcoCooler Unibox configurations