Content

  • Energy consumption and other cooling advantages
  • Performance comparison with state of the art
  • Only water used as cooling medium - no CFC e.a.
  • Savings and less CO2-emission 
  • Price similar to conventional AC unit
  • Cooling certified staff no needed for installation and service
  • Technical performance

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Advantages              

Energy efficiency and Performance advantages  

The product of AC-Sun stands out with 4 unique advantages, which separates it from other known conventional air conditioning systems.

 

  1. The source of energy supply is mainly solar heat or waste heat. The total electrical power consumption on AC-Sun is only 1/10 compared to other known air condition systems. The power consumption of the air distribution expected to be max. 0.4 kW (identical part of consumption used by conventional air condition unit).
     
  2.  Simple control system in form of continuously variable capacity regulation
     
  3. Cooling medium is only water
     
  4. The safety measure around the actual cooling process is essential better due to the use of water instead of chemical refrigerants.

 

 

Apart from this an AC-Sun air condition system is like any other air condition system and can be integrated in your present installation. The air  condition plant can be placed separately and the cooled air is directed to the user without any annoying noise. Continuous new air – no recirculation - gives comfortable air humidity. Individual set point for the room temperature; simple thermostat adjusts the amount of cold air to the room independent to the air condition plant. 

 
Performance Comparison with State of the art

The comparison between conventional, electrically powered AC-unit and an AC-Sun unit is based on average climate data from 21 years of measurements in Alanya, Turkey.

Below is shown a calculation of the power consumption of a traditional Air-Condition system and an AC-Sun system both on 10 kW cooling capacity (10 kW CC) to a house on 150 to 200 m2 floor area.

 

 

Alanya, Turkey

                   Comparison of power consumption in conventional AC and an AC-Sun                                           unit, each with a 10 kW CC and 21 years collected climate data

Specification of AC-power consumption 

Month

 

Jan.

Feb.

Mar.

April

May

June

July

Aug.

Sept

Oct.

Nov.

Dec.

[kWh/year]

Day         temperature [°C]

16

16

18

21

24

28

31

32

30

27

21

18

 

Night       temperature [°C]

-3

-2

1

5

9

13

15

15

11

7

3

-1

 

Humidity     outside [%]

55

54

58

62

63

63

62

61

58

53

54

55

 

Operation [hours/day]

0

0

0

0

10

12

12

12

12

8

0

0

 

Days per month

31

28

31

31

30

31

31

30

31

31

30

31

 

Operation [hours/month]

0

0

0

0

300

372

372

360

372

233

0

0

 

Conventional  AC unit

0

0

0

0

1350

1674

1674

1620

1674

1046

0

0

9038

AC-Sun          unit

0

0

0

0

150

186

186

180

186

116

0

0

1004

 Table 1: Conventional AC versus AC-Sun unit

The figures and calculations from the table above clearly demonstrate the 90% lower power consumption of the AC-Sun unit compared to the conventional AC unit. The power consumption of the AC-Sun unit relates to the fans installed for the air distribution and the small water pumps, totaling only to 10% of normal AC power consumption (10kW CC).

On an annual basis, the average savings on electrical power in the above example amount to 8,034 kWh ≈ 2,000 Euro/year/10 kW CC.  

 

Only water used as cooling media - no CFC e.a.

Exploiting water as cooling process agent removes the risks and the environmental drawbacks of traditional chemical coolants, such as HFC, CFC, hydrocarbons, or ammonia. 

The cooling process using solar heated water to compress the steam works all on vacuum lower than atmospheric pressure (< 1 bar, abs.). There will be no need for any cooling certificates to install AC-Sun units.

 

Savings and less CO2-emissions

The following gives a view on the atmospheric CO2 pollution per produced [kWh] power made on a power plant using ex. coal for the power production – for power data on AC-plants refers to “Advantages” in this part:

CO2 costs to the atmospheric and for the national climate 

  • 1 [kWh] power produced will leak 0,389/0,4 = 0,97 [kg CO2 / kWh] to the atmosphere, when the average efficiency on producing electrical power is set to 0,4
  • Measured data of AC unit (10 kW CC) gives a power consumption on 9.038 kWh/year * 0,97 [kg CO2 / kWh] = 8,767 [kg CO2/year/10 kW CC]
  • Furthermore the national climate costs per ton CO2 for each AC-plant with 10 kW cooling capacity, and a CO2-price = 14 [euro/ton CO2] (CO2-price, 2007, estimated)  in all a CO2-costs pr. year: 14*8,767 = 123 [euro/year]
Saving money as customer while making less CO2 
 
Savings per year in power cost; 25 [c/kWh] * (9.038 - 1.004)  2,000 [euro/year]
 
In most Countries there is a system of granting investment in solar heat-powered products – in Spain f. inst. 30%.
 
(Costs on (10 kW CC): Trad. AC: 0.25*9.038 = 2.260 Euro/year  ;  AC-Sun: 0.25 * 1004 = 251 Euro/year.
A car driving 20.000 km/year pollutes with 4 tons of CO2. Traditional powered AC (10 kW CC) pollutes with 9 tons of CO2)
 
 

Competitive initial investment

Despite the energy saving and the environmental friendliness of the AC-Sun unit, the investment of an AC-Sun unit is competitive compared to a quality conventional air-conditioning unit. Technically, we replace the compressor in conventional unit with our unique solar heat driven turbine. All other components are standard

 

Easy installation and service 

Because no chemical cooling agents are used, no special evacuation equipment is needed. Installation and service can be performed by technicians without cooling certification.

 

  

Technical performance

AC-Sun, design basis

Terms for industrial air condition plants to the Mediterranean area are assigned to have an outlet temperature of 17°C and an outdoor temperature of 35°C. This is preserved in the upcoming turbine construction with or without water supply.               

AC-Sun unit, design

The design capacity is based on:

Outdoor air temperature:    35˚C (Range 25 - 40˚C)

Solar collector temp.:          86˚C (Range 75 - 100˚C)

Air outlet temperature:         17˚C

Solar collector capacity:     12 kW (set to 12 m2, Equator)

Cooling capacity:                 10 kW

Power consumption:            0.4 kW

 

 Calculated capacity at different outdoor air temperatures 

Outdoor air temp. [˚C]

25

30

35

40

Cooling capacity [kW]

12.7

11.1

9.9

8.1