Technical specification for mechanical integration of chiller loop and skid for sCO2 rig components I. Scope of work The tender broadly includes the following: 1. Fabrication and supply of a portable skid for mounting the components ofthe CO2 loop in accordance with ASME B 31 standards. 2. The complete mechanical integration of the chiller system with the CO2loop in accordance with ASME 31.3 standards II. Technical specifications This document provides the technical specification required for successful integration of the components present in the chiller loop, the CO2 cylinder of the sCO2 loop and skid for sCO2 pump, precooler, condenser& pressure vessel. Below tables provide the detail requirements of this tender which need to be quoted/provided by the bidders/vendors. Sr. No. Spec Remark 1 All the hardware to be procured/fabricated by vendor should be capable of sustaining high pressure of 3100 psi and operating temperature of min -10 0 C and max of 50 0 C 2 All the components should meet the ASME standard for design, material, assembly, operation and integration, specifically piping (including pipe bends), valves, fittings, joints, etc. should meet ASME B31 standard 3 All the integration hardware when assembled with the rig components should provide leak-proof working and vendor should demonstrate the leak test as per ASME 31.3 4 The skid should be capable of taking 2 times the weight of all the components and the transient loading due to operation 5 The skid should be designed to withstand the vibrations coming from rotating component (sCO2 pump) without failure for continuousdaylong operation of the plant 6 The skid should be portable and should have leveling casters with required locking mechanism so that it should not vibrate or move during the operation 7 Skid should have sufficient extra space (minimum of 300 mm) between all the components to provide accessibility for connection, inspection and repair
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Technical specification for mechanical integration of chiller loop and skid
for sCO2 rig components
I. Scope of work
The tender broadly includes the following:
1. Fabrication and supply of a portable skid for mounting the components of the CO2 loop in
accordance with ASME B 31 standards.
2. The complete mechanical integration of the chiller system with the CO2 loop in accordance with
ASME 31.3 standards
II. Technical specifications
This document provides the technical specification required for successful integration of the
components present in the chiller loop, the CO2 cylinder of the sCO2 loop and skid for sCO2 pump,
precooler, condenser& pressure vessel. Below tables provide the detail requirements of this tender
which need to be quoted/provided by the bidders/vendors.
Sr. No. Spec Remark
1
All the hardware to be procured/fabricated by vendor should be
capable of sustaining high pressure of 3100 psi and operating
temperature of min -100 C and max of 50
0 C
2
All the components should meet the ASME standard for design,
material, assembly, operation and integration, specifically piping
(including pipe bends), valves, fittings, joints, etc. should meet ASME B31 standard
3
All the integration hardware when assembled with the rig components
should provide leak-proof working and vendor should demonstrate the leak test as per ASME 31.3
4 The skid should be capable of taking 2 times the weight of all the
components and the transient loading due to operation
5
The skid should be designed to withstand the vibrations coming from
rotating component (sCO2 pump) without failure for continuous daylong
operation of the plant
6
The skid should be portable and should have leveling casters with
required locking mechanism so that it should not vibrate or move during the operation
7
Skid should have sufficient extra space (minimum of 300 mm) between
all the components to provide accessibility for connection, inspection and repair
8
Skid should have space to put test coupon of 600 mm by 600 mm and
other accessories like sensors, back pressure relief valves, electrical circuits, etc. Refer to the CO2 loop schematic
9
The skid is expected to have slotted holes to assemble the components
tightly. And it should have necessary connections/connectors/hooks for
packaging, transportation and lifting to avoid damage to components and to the skid itself
10 The skid components should be painted to have corrosion resistance properties
11
All the components should be tested before integration. Perform
calibration & provide test certificate for thermal sensors. Comply with
ASME B31 standard wherever applicable
12 Vendor should demonstrate the working of all the components by
working electrical connection through DAQ and control panel
13
Vendor is also expected to demonstrate emergency shutdown of the
circuit and its effect on the mechanical integration components and skid
14 All the components should at least have 1 year warranty
15 All the components (wherever possible) should be made of Stainless Steel only
16 Vendor shall have the manufacturing facility (steel cutting, welding,
testing etc) required for the execution of the project. (Proof of having
the manufacturing facility to be attached)
17
Vendor must have experience and must provide the proof of executing
super critical CO2 system with the operating pressure of 3100 psi and
operating temperature of min -100 C and max of 50
0 C
18 All the components should be well insulated to avoid any heat transfer
between the system and the surrounding.
III. Material/components Provided by IITM:
SR. No. Items Quantity
1 Precooler 1
2 Condensor 1
3 Chiller 1
4 CO2 cylinder 2
5 sCO2 pump with motor 1
6 Test coupon 1
7 Pressure vessel 1
Technical Specifications for materials supplied by IIT Madras
1. Precooler: Heat Exchanger of 10KW
The heat exchanger unit should be capable of handling the hot fluid of the pressure up to 200 bar and at a
maximum flow rate of 0.1 kg/s and at a maximum inlet temperature of 100o C. The heat exchanger
is expected to behave like an unit to cool of super critical CO2. The heat exchanger shall accept water /
Refrigerant / MEG as one of the cold fluids. The cold fluid operating pressure shall not exceed 4 bar and
maximum operating temperature of 400 C. The heat exchanger unit can be made of SS316L meeting
ASME standards of 200 bar pressure application on the side while 4 bar maximum pressure on the cold
side. The unit can be diffusion bonded multiple channel type compact heat exchanger type specially built
for super critical CO2 application purpose. The Unit shall be specifically meant for handling gaseous CO2 or
liquid CO2 or super critical CO2 as hot fluid. The cold and hot fluid ports must meet standard BSP flange
connections to be able connect a 1-inch pipeline in the layout. The heat exchanger is expected to have an
outer insulation to minimize the ambient temperature effects in the closed operation. The construction of
the HX should comply the ASME design code for meeting the maximum operating pressure and
temperature requirements. The units should have been pretested for any leak using the standard water
leak test procedures.
Thermal requirements
Parameter Hot Side Cold Side
Heat load 10 KW @
max flow
10 KW @
max flow
Inlet Temperature ( C ) 100 10
Outlet Temperature ( C ) 50 46.8
Design Temperature Max 2000C 50
0 C
Flow Requirements
Parameter Hot Side Cold Side
Pressure Drop < 0.5 bar < 0.5
Inlet Pressure 200 bar Max 4 bar Max
Inlet Flow (kg/s) 0.2 0.5
Mechanical requirements
Parameter Hot Side Cold Side
Material (Nozzle, Flange, Header &
Pipe)
SS316L SS316L
Welding No No
Bonding Diffusion Diffusion
Inlet Flange Size
Requirement
To connect to a 1- inch SS
pipeline
To connect to a 1-inch SS pipeline
Outlet Flange Size
Requirement
To connect to a 1- inch SS
pipeline
To connect to a 1-inch SS pipeline
Additional Requirements
Parameter
Insulation Yes for outside surface of the HX
Inbuilt Strainer for
both fluids Yes
Fouling Allowance Not needed
Fluid
Properties for Sizing
the HX
Use Refprop of NIST database (https://www.nist.gov/srd/refprop)
2. Cooling Heat Exchanger of 10 KW Rated / Condenser
The heat exchanger unit should be capable of handling the hot fluid of the pressure up to 200 bar and at a
maximum flow rate of 0.1 kg/s and at a maximum inlet temperature of 40o C.The heat exchanger is
expected to behave like a condenser unit to cool of liquid/gaseous CO2 so that it turns in to complete
liquid state before being pressurized to super critical state. The working hot fluid is CO2from the standard
gas bottle. The heat exchanger shall accept MEG as one of the cold fluids. The cold fluid operating
pressure shall not exceed 4 bar and maximum operating temperature of 400 C. The heat exchanger unit
can be made of SS316L meeting ASME standards of 200 bar pressure application on the side while 4 bar
maximum pressure on the cold side. The unit can be diffusion bonded multiple channel type compact
heat exchanger type specially built for super critical CO2 application purpose. The Unit shall be
specifically meant for handling gaseous CO2 or liquid CO2 or super critical CO2 as hot fluid. The cold and
hot fluid ports must meet standard BSP flange connections to be able connect a 1-inchpipeline in the
layout. The heat exchanger is expected to have an outer insulation to minimize the ambient temperature
effects in the closed operation. The construction of the HX should comply the ASME design code for
meeting the maximum operating pressure and temperature requirements. The units should have been
pretested for any leak using the standard water leak test procedures.