Eurammon Symposium Ammonia Absorption Refrigeration. Colibri b.v.

Transcription

1 Eurammon Symposium 2016 Ammonia Absorption Refrigeration Michael Rabenstein Jürgen Langreck Colibri b.v.

2 Introduction Colibri b.v. colibri b.v. experts in ammonia absorption refrigeration Products and Services for: - Ammonia absorption refrigeration plants - Ammonia absorption heat pumps - Turn key plants - Components - Engineering - Project management - Service and maintenance - Consultancy - R&D Worldwide, with capacities between 200 kw and several MW Schaffhausen, 23 rd / 24 th June, 2016 Page 2

3 Operating Range of Refrigeration Plants +6 o C Evaporation Temperature -60 o C Lithium- Bromide ARP Compression Refrigeration Plant 1 Stage Ammonia-Water AARP 1 Stage Compression Refrigeration Plant 2 Stages Schaffhausen, 23 rd / 24 th June, 2016 Page 3

4 Compression Refrigeration Cycle Condenser Evaporator High Pressure Vapour Cooling Water Expansion Valve for Ammonia Brine Low Pressure Vapour Compressor M Schaffhausen, 23 rd / 24 th June, 2016 Page 4

5 Absorption Refrigeration Cycle Schaffhausen, 23 rd / 24 th June, 2016 Page 5

6 COP = Refrigeration Capacity / Heat Input COP of AARP Thermal COP of Ammonia Absorption Refrigeration Plants 0,80 0,70 0,60 0,50 0,40 0,30 0, C C C 0,10 0, Evaporation Temperature C Schaffhausen, 23 rd / 24 th June, 2016 Page 6

7 Outlet Temperature of Hot Water [ C] Minimum Temperature of Heat Supply 1 Minimum Temperature of Heat Supply Steam Temperature or Hot Water Inlet Temperature has to be 10 C Higher Cooling Water Temperature: 15 C C 25 C 30 C 70 0 C -10 C -20 C -30 C -40 C -50 C Evaporation Temperature [ C] Schaffhausen, 23 rd / 24 th June, 2016 Page 7

8 Hot Water Return Temperature C Minimum Temperature of Heat Supply 2 Minimum Hot Water Return Temperature for Two Different Evaporation Temperatures Evaporation Temperature: -10 C -14 C Wet Bulb Temperature C Schaffhausen, 23 rd / 24 th June, 2016 Page 8

9 Main Design Parameters for AARP Local design conditions Temperature of heat input Required refrigeration temperature Temperature cooling medium (depending ambient conditions) Schaffhausen, 23 rd / 24 th June, 2016 Page 9

10 Main Applications for AARP Trigeneration: Combination with Cogeneration Plants (CHP) using the heat of the exhaust gasses and/or the cooling water of the engine. Food industries which require refrigeration temperatures between 0 o C and -60 o C. Industries which require refrigeration on different temperature levels (one AARP with different stages of evaporation). Chemical industries with waste heat (gasses, liquids, steam). Schaffhausen, 23 rd / 24 th June, 2016 Page 10

11 Cooling of Brine Schaffhausen, 23 rd / 24 th June, 2016 Page 11

12 Direct Use of Ammonia from AARP in Production Plants Schaffhausen, 23 rd / 24 th June, 2016 Page 12

13 Combination AARP and Compression Plant Schaffhausen, 23 rd / 24 th June, 2016 Page 13

14 Benefits of AARP for Industrial Cooling High availability of the plants Plants are not susceptible to repair works (no moving parts) Low maintenance costs No need for specialists to service and maintain No special spare parts required, use of standard available components Automatic operation of the plants possible Flexible to change operating conditions (temperatures) Excellent partial load behaviour Simple back-up of all moving components possible Long life time (more than 30 years possible) Low electricity consumption Schaffhausen, 23 rd / 24 th June, 2016 Page 14

15 Example Project AARP in an Energy Centre of a Dairy Company (Pictures: SPIE Energy Solutions GmbH) Schaffhausen, 23 rd / 24 th June, 2016 Page 15

16 Example Project AARP and CHP Technical Data CHP Electrical output: 1125 kw Heat of exhaust gasses: 685 kw Heat engine cooling: 587 kw Technical Data AARP Heat input: 587 kw Hot water in/out: 93 o C / 82 o C Refrigeration capacity: 320 kw Brine in/out: 0 o C / -4 o C Capacity evap. coolers: 907 kw Electrical consumption AARP: 11,5 kw Electrical consumption coolers: 12,5 kw Electrical consumption c.w. pump:7,5 kw Schaffhausen, 23 rd / 24 th June, 2016 Page 16

17 Cooling to the Ambient An AARP rejects twice the cooling capacity to the ambient compared to a compression plant. Important requirements for cooling devices: High efficiency, small temperature differences Low energy consumption for fans and pumps Low maintenance costs Long life time Compact construction Schaffhausen, 23 rd / 24 th June, 2016 Page 17

18 Contact eurammon: Dr. Karin Jahn Managing Director Lyoner Strasse 18 D Frankfurt Germany Phone: +49 (0)