CO 2 hydrate cooling system and LCC analysis for energy transportation application

Abstract Recently, many researchers have investigated alternative refrigerants in order to replace CFC and HCHC refrigerants. One of the alternative refrigerants is CO2 hydrate slurry that has a large latent heat (507 kJ/kg). In this study, we carry out an economic evaluation of the CO2 hydrate cooling system by Life-cycle cost (LCC) analysis technique. LCC consists of the key parameters such as initial cost (IC), energy cost (EC) and maintenance cost (MC). Total LCC for a district cooling system (DCS) and CO2 hydrate cooling systems is compared for long distance energy transportation application. It is found that the total LCC for the CO2 hydrate cooling system is only a half of that of the DCS based on the cooling capacity of 5000 RT, the transportation distance of 10 km, and the service life of 20 years. It is concluded that the optimum transportation pipe diameters for CO2 hydrate and DCS are 200 mm and 400 mm, respectively, for the present basis conditions. It is also concluded that the effect of the pump power rate of the DCS on the total LCC is 2.5 times higher than that of the CO2 hydrate cooling system.

[1]  V. Sahni,et al.  THERMODYNAMIC ANALYSES OF MULTIPLE EVAPORATORS VAPOR COMPRESSION REFRIGERATION SYSTEMS WITH R410A, R290, R1234YF, R502, R404A, R152A AND R134A , 2014 .

[2]  Carolyn A. Koh,et al.  Clathrate hydrates of natural gases , 1990 .

[3]  P. Haberschill,et al.  Rheological properties of CO2 hydrate slurry produced in a stirred tank reactor and a secondary refrigeration loop , 2013 .

[5]  E. Hammerschmidt.  Formation of Gas Hydrates in Natural Gas Transmission Lines , 1934 .

[6]  Seong-Pil Kang,et al.  Gas Hydrate Phase Equilibria of $CO_2+H_2$ Mixture in Silica Gel Pores for the Development of Pre-combustion Capture , 2009 .

[7]  Park Tae-Keun.  A Case Study on the LCC Analysis for the Education and Research Building of Seoul National University , 2004 .

[8]  Soon‐Geul Lee,et al.  Development of type 2 solution transportation absorption system for utilizing LNG cold energy , 2007 .

[9]  J. Petitet,et al.  Modelling of the available latent heat of a CO2 hydrate slurry in an experimental loop applied to secondary refrigeration , 2006 .

[10]  Bukola Olalekan Bolaji,et al.  Ozone depletion and global warming: Case for the use of natural refrigerant – a review , 2013 .

[11]  Praveen Linga,et al.  Hydrogen storage in clathrate hydrates: Current state of the art and future directions , 2014 .

[12]  Jiangping Chen,et al.  OPTIMIZATION OF THE RESERVE-TYPE DISTRIBUTOR FOR R410A AIR CONDITIONER , 2014 .

[13]  Michael Dennis,et al.  Clathrate hydrate technology for cold storage in air conditioning systems , 2014 .

[14]  Yong Tae Kang,et al.  Absorption heat pump systems for solution transportation at ambient temperature — STA cycle , 2000 .

[15]  Hari Prakash Veluswamy,et al.  Macroscopic kinetics of hydrate formation of mixed hydrates of hydrogen/tetrahydrofuran for hydrogen storage , 2013 .

[16]  S. Tyagi,et al.  EXERGY ANALYSIS OF A LiBr–H2O VAPOR ABSORPTION REFRIGERATION PLANT: A CASE STUDY , 2014 .

[17]  Peng Zhang,et al.  A comparative study of different methods for the generation of tetra-n-butyl ammonium bromide clathrate hydrate slurry in a cold storage air-conditioning system , 2013 .

[18]  Sang-Yum Lee,et al.  A Study on the Database for Analyzing Life Cycle Cost of Road Facilities in Seoul , 2014 .