Hot air recirculation tends to reduce the capacity of the heat exchanger, thereby requiring a higher air flow rate andor more heat transfer surface. The heat exchanger discussed in this manual has been. Heat exchangers heat exchangers are used to transfer heat between two sources. Our rear door heat exchangers rdhx, used in combination with our cooling distribution units, provide the most energy and spaceefficient, highdensity server rack cooling on the market, as tested by.
The area should be level and clean of any foreign material. Never shock the heat exchanger with cold fluid when hot. The term heat exchanger applies to all equipment used to transfer heat between two streams. The cooling effect kicks in when the warm air flows through the heat exchanger in the rear door of the server cabinet. Record information about the ibm rear door heat exchanger for the idataplex rack in the following table. Aircooled heat exchangers 12631 the intake of the unit or other nearby units. Download this free 3d cad block model of a plate heat exchanger. The coolcentric family of heat exchangers comprises passive, liquid cooled heat exchangers. Use this information to prepare your location to facilitate the use of the ibm rear door heat exchanger the heat exchanger is a watercooled device that is mounted on the rear of an ibm rack to cool the air that is heated and exhausted by devices inside the rack.
Move hoisting system into place and stage both old heat exchanger and replacement heat exchanger. In dealing with the heat load closer to the source, the. Provides up to 35kw of cooling passive design no fans, moving parts or electrical connections 100% sensible cooling no condensate installs in minutes no rearrangement of enclosures required allows 5x the compute power. In contrast to the parallel flow heat exchanger, the counter flow heat exchanger can have the hottest coldfluid temperature greater than the coldest hotfluid temperatue. The alternative channels maximises the heat transfer surface in a compact manner. The coldlogik cl20 rear of cabinet cooler boasts the most energy efficient low to high density data centre cooling solution available. Rear door heat exchanger, an open looped cooling technique is one of the solutions for such scenarios. You will need this information if you need to call for service. The ibm rear door heat exchanger for the idataplex rack is a watercooled door that is mounted on the rear of the idataplex rack to eliminate the heat exhaust that is produced by the devices in the rack. The rear door heat exchanger is a watercooled device that mounts on the rear.
Durable 3pass heat exchanger design easy to install and. Heat exchanger replacement instructions weilmclain. The cyberrack active rear door is a heat exchanger door with ec fans for installing on the rear door of server racks. A supply hose delivers chilled, conditioned water to the heat exchanger. The rdhx employs a speciallydesigned fin and tube coil, protected by two 79% open perforated sheets, to maintain airflow through the it enclosure. Rear door heat exchanger heat exchanger or chilled building water supply. Installation of the rear door heat exchanger v2 type 1756 is your responsibility and is not provided as part of the product purchase. Onrak it cooling brochure airedale air conditioning. In addition to cooling with passive heat exchangers, similar results can be achieved with fanassisted rear door heat exchangers and refrigerantcooled rear door exchangers. The coldlogik cl20 rear cooler was the first intelligent rear door heat exchanger rdhx cooling solution.
In contrast to the parallel flow heat exchanger, the counter flow heat exchanger. A passive style rdhx contributes to optimizing energy efficiency. This chilled waterbased system provides up to 35kw of roomneutral cooling. Therefore, it can produce the most effective performance from the compact size. Ibm rear door heat exchanger for the idataplex rack. Transportation always transport the heat exchanger in a protected position.
Hummer manuals is here to provide hummer owners with h1 civilian offroad vehicle, h2 suv and sport utility truck sut, h3 sport utility vehicle suv printed haynes,bentley publisher books electronic. Rear door heat exchangers standard rdhx and low density rdhxld replace standard rear doors on it rack enclosures, and the sidecar is an inrow heat exchanger. In this paper, emphasis is laid on the analytical determination of the optimum heat load after calculating the effectiveness of heat exchanger at given operating conditions of the data center and heat exchanger. Never lift or elevate in any way other than described in this manual. It removes heat from the rack before in enters the room, allowing your ac unit to handle the increasingly dense system deployment your organization requires to meet its growing computing needs. Easily assimilates into existing data center infrastructure. The heat exchanger supplied has three contact points on the ground, with feet provided for bolting to the concrete base if one is provided. Heat exchanger design john richard thome 1er mars 2008 john richard thome ltcm sgm epfl heat transfer heat exchanger design 1er mars 2008 1 41.
The coolcentric rear door heat exchanger rdhx the worlds most energy efficient and spacesaving cooling solutions for data centers the coolcentric rear door heat exchanger rdhx is a passive liquid cooled heat exchanger that replaces standard rear doors on it enclosures. Sgm epfl heat transfer heat exchanger design 1er mars 2008 12 41. Pdf transient thermal performance of rear door heat exchanger. It is designed to increase equipment density in data centers, and helps reduce the need for inefficient. Active or passive models when you use our rear door heat exchangers rdhx with our cooling distribution units cdus, youll enjoy the most energy and space. Ultraefficient uses less than 600 watts of power input for 50 kw of cooling. The serial number is located on the side rail of the heat exchanger, between the two lift handles. Coldlogik rear of cabinet cooling solution usystems. Access internal components from all sides, remove components and set aside in a clean staging area. Supply and return water hoses not included with this product deliver conditioned water to the heat exchanger in the door and. Ibm has selected coolcentricvette corporation to provide service and support for the ibm rear door heat exchanger for the idataplex rack. One is in the water chiller and another is in the water pump for the rear door heat exchanger rdhx. Pdf transient thermal performance of rear door heat.
Our new active rear door uses fans that are hotswappable, which means no downtime if a fan should experience a failure. Simple schematic of aircooled electronics rack with watercooled rear door heat exchanger. Our rear door heat exchangers rdhx, used in combination with our cooling distribution units, provide the most energy and spaceefficient, highdensity server rack cooling on the market, as tested by silicon valley leadership group svlg who found that this system used just 20% of energy compared to conventional closecontrol air conditioning unit systems. R sekulib university of kentucky introduction a heat exchanger is a device that is used for transfer of thermal energy enthalpy between two or more fluids, between a solid surface and a fluid, or between solid particulates and a. R sekulib university of kentucky introduction a heat exchanger is a device that is used for transfer of thermal energy enthalpy between two or more. For purposes of illustration we will assume that the water flow rate through the heat exchanger is 75. Data centre rear door cooling solutions infiniti it. Rear door cooling solutions rear door cabinet cooling or back of rack systems are becoming the more favourable choice for data centre cooling. Knurr dcd passive cooling unit for maximum energy efficiency 4 enp dcd is an airwater heat exchanger integrated into the rear door of a server rack. They are referred to as rear door heat exchanges rdhe, and ideal for high density computing environments that utilise blade or high performance clusters hpc. Fluid engine oil sea water inlet temperature, c 65 20 outlet temperature, c 55 25 heat. Transient thermal performance of rear door heat exchanger in. Design a double pipe heat exchanger with bare inner multitubes that can be used to cool engine oil with cold sea water. Liebert dcd rack door cooling module bottom or overhead connections are completely static no moving components will interfere with opening or closing the door.
When heat exchanger handles steam and other fluid of high temperature, it has hazard of burns. Removes heat from the server rack at source and then discharges the heat. Benefi ts of the watercooled passive rear door heat exchanger the passive rear door heat exchanger rdhx uses a high performance airtowater heat exchanger coil in lieu of an open cabinet or ventilated door. Data center rack cooling with reardoor heat exchanger. This system was tested by the silicon valley leadership group, which found this system uses 20%. The server rack door is swapped for the cyberrack active rear door, which transforms the rack into a cooled server rack that no longer discharges any heat load. This document provides the installation, specification, and maintenance information for the ibm rear door heat exchanger for the.
The onrak is a resilient rear door heat exchanger, designed to manage high discharge temperatures directly from the server into the aisle space. The coolcentric rear door heat exchanger rdhx is the most efficient, flexible and cost effective cooling solutions for todays sustainable data centres. The heat exchanger is able to absorb heat loads from server racks of up to 35 kw. The ibm rear door heat exchanger is an option for the ibm pureflex system 42u rack 795394x that can remove up to 30,000 watts of heat per hour using chilled water. Cross flow heat exchanger modeling of transient temperature. Combination of vertiv knurr dcd cooling door with server racks from. Heat exchanger sizing and quote form to find out which model of heat exchanger.
Rear door heat exchanger a method for datacenter thermal management standalone performance yrack level testing with high power density servers ybladecenters were used in the rack yfunctional. Compact solution for newly constructed and existing data centers maximum possible energy efficiency due to. When the heat exchanger is under running or pressurizing, never unscrew any of the tightening bolts. The server rack door is swapped for the cyberrack active rear door, which transforms the rack into a cooled server rack that no longer discharges any heat load in the data center. Heat exchangers jordan university of science and technology. Our cuttingedge data center systems will help you meet the demanding cooling and hvac requirements of server rooms, data rooms, and mission critical facilities. The cooling performances of two different failure scenarios are investigated.
Never introduce hot fluid suddenly when heat exchanger is empty or cold. The rear door heat exchanger v2 has an industryleading efficiency of 100 percent at a 30 kw load. For utube and floating rear tube sheet units, flow. Liquicool rear door heat exchanger rear door heat exchanger rdhx advantages. The heat exchanger is a watercooled device that is mounted on the rear of an ibm. For example, a fixedtube sheet exchanger having stationary and rear heads integral with tube sheets. It can replace the traditional approach to data centre. Always ensure that the unit is securely fixed during transportation. Rear door heat exchanger rdhx coolcentrics liquicool rear door heat exchangers rdhx can reduce total energy consumption in excess of 60% and decrease white space by in excess of 50% when compared to conventional pac crac units. These inherent features of a rdhx help reduce energy use while minimizing maintenance costs. Server rack air conditioner data centre cooling airedale.
Coolcentric rdhx reduces cooling energy consumption up to 90%. The coolcentric rear door heat exchanger rdhx is a passive liquid cooled heat exchanger that replaces standard rear doors on it enclosures. Supply and return water hoses not included with this product deliver conditioned water to the heat exchanger in the door. If the heat exchanger is located at the inlet or discharge of a blower with a pulsating flow, such as a roots type rotary lobe blower, the heat exchanger must be protected from the pulsation by a chambered silencer. This paper describes a method to reduce the effect of the hot air recirculation with a water cooled heat exchanger attached to the rear door of the rack. Furthermore, dont touch it until complete cooldown to the normal temperature after the shutdown. How it works ambient air is pulled into the cabinet via the active equipment fans. Plate heat exchanger installation and operation manual. Ibm rear door heat exchanger for the idataplex racks data center. The rear door heat exchanger is a watercooled door that is mounted on the rear of an ibm netbay42 enterprise rack to cool the air that is heated and exhausted by devices inside the rack. Can be used with directtochip liquid cooling cold plates or rear door heat exchangers with multiple connector options. This can reduce both air conditioning capacity needs and hot spot problems.
Ibm rear door heat exchanger is capable as of april 27, 2012, when used in accordance with associated ibm documentation, of satisfying the applicable requirements of section 508 of the rehabilitation act, provided that any assistive technology used with the product properly interoperates with it. Rear door heat exchangers this planning guide contains information for preparing your location to facilitate the use of ibm rear door heat exchangers. Coolcentrics liquicool rear door heat exchangers rdhx can reduce total energy consumption in excess of 60% and decrease white space by in excess of 50% when compared to conventional pac crac units. When you use our active rear door heat exchangers adhx with our cooling distribution units cdus, youll enjoy the most energy and spaceefficient, highdensity server rack cooling on the market. It removes heat from the rack before in enters the room, allowing your ac unit to handle the. Counter flow heat exchangers are the most efficient of the three types. As it infrastructure scales, so does power consumption, resulting in increased operating expenses, cooling requirement and reduce space availability for future expansion. Portable document format pdf and includes the ibm documentation. Planning for the installation of rear door heat exchangers. Motivairs chilleddoor is an active rear door heat exchanger capable of removing server densities up to 75kw per rack and 100% heat removal. The empyre outdoor hot water wood furnace you have selected one of the best outdoor wood furnaces on the market today. The heat exchanger must be isolated from system vibrations using flexible piping connections and isolation pads on the mounting feet. Product name ibm rear door heat exchanger for the idataplex rack.
The heat from the data centre is dissipated via chilledwater piping and ideally fed into a heat recovery system outside the server zone. The heat exchanger is a watercooled door that is mounted on the rear of a lenovo. Using the rear door heat exchanger v2 can nearly eliminate the recirculation of hot air in your data center, requiring fewer. Provides up to 35kw of cooling passive design no fans, moving parts or electrical connections 100% sensible. Active or passive models when you use our rear door heat exchangers rdhx with our cooling distribution units cdus, youll enjoy the most energy and spaceefficient, highdensity server rack cooling on the market. The coolcentric heat exchanger solution offers a very attractive tco value to end users.
The rdhx employs a speciallydesigned fin and tube coil. Liquicool rdhx solutions can lower your data center total cost of ownership by as much as 50%. Coolcentrics liquicool rear door heat exchangers rdhx can reduce total energy consumption in excess of 60% and decrease white. Our passive rear doors have no moving parts, so little if any regular maintenance is required. The coldlogik cl20 rear of cabinet cooler boasts the most. Rear door heat exchanger rdhx email this page print this page. Rear door heat exchangers as a cost eff ective alternative to crah air cooling page 3 introduction. Rear door heat exchanger v2 increase equipment density while saving on energy costs the rear door heat exchanger v2 delivers an industryleading cooling system that uses chilled water to provide cooling for individual server cabinets. In dealing with the heat load closer to the source, the onrak is highly efficient in both power usage and floor space and is ideal for targeting hot spots in medium to. The rear door heat exchanger is a watercooled device that mounts on the rear of the ibm netbay42 enterprise rack to cool the air that is heated and exhausted by devices inside the rack. The heat exchanger is a watercooled door that is mounted on the rear of an ibm. The rear door heat exchanger v2 replaces the back door. The total heat load of the cabinet is controllable remotely and a rear door heat exchanger is attached with controllable water flow rate. The onrak server rack air conditioner is a resilient rear door heat exchanger, designed to manage high discharge temperatures directly from the server into the aisle space.
Proven threepass cast iron heat exchanger with captured elastomer seals prewired for an optional fullyintegrated control system that can manage automated applications adaptable door design and interchangeable side panels that can accomodate most installation conditions venting options chimney or direct vent. Ibm rear door heat exchanger for the idataplex racks. Click here for rear door heat exchanger enclosure compatibility chart. Overview the ibm rear door heat exchanger rdhx116495x provides an extremely. This also increases the air resistance in the heat exchanger. The ibm rear door heat exchanger is a effective way to assist your ac system to keep you datacenter cool. Failure to have a level site could result in the heat exchanger twisting and subsequently developing leakages. They are referred to as rear door heat exchanges rdhe. The hot exhaust air produced by the active equipment then passes over a heat exchanger matrix either by its own velocity or pulled through via ec centrifugal fans mounted within the door. Rear door heat exchanger a method for datacenter thermal management solution details yreplace an existing rear door with a heat exchanger ythe footprint increase is about 5. However, the term is commonly used to equipment in which two process streams exchange heat with each other.
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