New valve solutions for growing Middle-East district cooling networks

Published: 16.02.2015

The International Energy Agency (IEA) reports that the Middle East will need to invest $18 billion over the next 5 years in new pipelines and associated infrastructure http://urly.fi/mH6. This means the Gulf Cooperation Council (GCC) will add 21,000 km during 5 years to the current pipeline network, approximately 14% of the global planned network. To make that huge investment profitable, optimized solutions have to be chosen for the entire life-cycle of the district cooling systems in order to deliver the highest possible energy efficiency and cost-effectiveness throughout the whole network. Vexve’s product range covers the entire district cooling system from centralized cooling plants, through the distribution piping network, to pumping stations and building specific substations.


Pre-insulated valve solutions challenge today’s common DC pipeline installation methods in Middle-East

Traditionally valves are installed to be accessible in a concrete valve chamber. Usually several feet wide and deep, valve chambers can be a severe obstacle and a headache for designers and builders; especially in an area with a high density of commercial and residential buildings that need not only cooling but other utilities as well. Normally, butterfly valves with a cast iron body and flanged connections are used. The seat is made of an inner rubber lining. The valves and the flanged connections with dismantling joints are not able to withstand axial or bending loads and the pipes have to be anchored around the valve chambers.

Vexve’s full range of fully welded valves are especially designed for district cooling applications where their numerous benefits provide the optimal solution in conjunction with a pre-insulated piping system for a more reliable district cooling network.

Standardized according to EN 488, these factory insulated valves can be directly buried without using large valve chambers. The valves are designed to be directly welded into the pipeline without flanged connections to provide a fully tight solution for safe operation at all times.

Vexve’s full bore ball and butterfly valves have high Kv-values offering a low pressure drop for lower pumping energy and costs, thus offering a more efficient and greener DC network.

Vexve solution

Traditional solution

Pre-insulated and directly buried
» cost and space saving
Valve chamber
» flooding possible
» needs space and is an obstacle for other important utilities
Welded connection
» fully tight
» no dismantling joints needed
Flanged connection
» possible leakage
» dismantling joints needed
High quality (stainless steel, special alloy) materials
» no maintenance
Soft seated rubber linings wear out
» high risk of no tight shut-off
» maintenance needed
Certified/designed according to EN488
» can withstand axial loads
» no need for anchors
Cast iron bodies can crack under by loads induced
» anchors needed

Full bore design for ball and butterfly valves
» reduced pumping costs

Reduced bore design
» high pressure drop

 

With these benefits, Vexve’s valves offer by far the most economic and cost efficient solution over the whole district cooling network life cycle and the shortest return on investment for its utility providers.

For optimized, easy and reliable operation, minimum maintenance and complete safety we recommend HydroX hydraulic valve actuators for automatic opening/closing operation. HydroX actuators can be manually, automatically or remotely controlled and are specifically designed for district heating and district cooling applications with full compatibility to Vexve Oy’s Valves.


Come and meet Vexve´s experts and our partner of pre-insulated piping,
Perma-Pipe Middle-East

at Airport Show Dubai, 9 – 11 May 2016,
Dubai International Convention & Exhibition Centre,
Stand 6062

Petri Tuominen, Middle-East Export Manager
petri.tuominen(a)vexve.com
Tel. +358 10 7340 754


 Learn more about the total range of Vexve Valve Solutions

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