Boiler Efficiency Guide Cleaver Brooks-Books Pdf

BOILER EFFICIENCY GUIDE Cleaver Brooks
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Today s process and heating applications However every boiler operates under the. continue to be powered by steam and same fundamental thermodynamic principles. hot water The mainstay technology for Therefore a maximum theoretical efficiency. generating heating or process energy is the can be calculated for a given boiler design The. packaged firetube boiler The packaged maximum value represents the highest available. firetube boiler has proven to be highly efficient efficiency of the unit If you are evaluating a. and cost effective in generating energy boiler where the stated efficiencies are higher. for process and heating applications than the theoretical efficiency value watch. out The efficiency value you are utilizing may, Conducting a thorough evaluation of. not truly represent the fuel usage of the unit, boiler equipment requires review of boiler. type feature and benefit comparison In the end efficiency comes down to value. maintenance requirements and fuel usage The value of the boiler The value of the. requirements Of these evaluation criteria a burner The value of the support provided. key factor is fuel usage or boiler efficiency throughout the life of the equipment. Boiler efficiency in the simplest terms Cleaver Brooks we have built our reputation. represents the difference between the energy by manufacturing the highest efficiency and. input and energy output A typical boiler highest value products in the industry We. will consume many times the initial capital pride ourselves in providing you with the. expense in fuel usage annually Consequently most comprehensive and reliable service. a difference of just a few percentage points in support through our best in the industry. boiler efficiency between units can translate representative network When it comes to. into substantial savings The efficiency data efficiency we believe in sticking to the facts. used for comparison between boilers must be Because the facts say there is a difference. based on proven performance to produce an between boilers and boiler companies. accurate comparison of fuel usage However The value of buying a higher efficiency CB. over the years efficiency has been represented boiler will pay dividends every day every. in confusing terms or in ways where the year throughout the life of the equipment. efficiency value did not accurately represent, proven fuel usage values Sometimes the. representation of boiler efficiency does, not truly represent the comparison of energy. input and energy output of the equipment, This Efficiency Facts Booklet is designed.
to clearly define boiler efficiency It will, also give you the background in efficiency. needed to ask the key questions when, evaluating efficiency data and provide. you with the tools necessary to accurately, compare fuel usage of boiler products. specifically firetube type boilers, Remember the initial cost of a boiler is the. lowest portion of your boiler investment, Fuel costs and maintenance costs represent.
the largest portion of your boiler equipment, investment Not all boilers are created. equal Some basic design differences, can reveal variations in expected efficiency. performance levels Evaluating these, design differences can provide insight. into what efficiency value and resulting, operating costs you can expect. Introduction When considering the replacement of an old. boiler review the following points to make sure, you are performing a comprehensive evaluation.
Why choose the most of your situation, efficient boiler. F A C T S 1 Maintenance Costs, When you buy a boiler you really are putting Review your maintenance costs carefully. a down payment on the purchase of steam or The old unit is costing you money in various. hot water The payments to generate the power ways including emergency maintenance. are ongoing over the life of the equipment downtime major maintenance requirements. and are driven by fuel to steam efficiency and past and pending difficult to find and. maintenance costs Even with economical expensive parts requirements operator. fuel costs the selection of a high efficiency time in keeping the unit on line and overall. boiler will result in substantial cost savings A vessel burner and refractory problems. boiler installation costing 150 000 can easily Many of these costs can be hidden within. consume over 1 000 000 in fuel every year your overall maintenance budget You are. at today s energy rates Future energy rates paying the price for having outdated boiler. are sure to be much higher Selection of a room equipment But the costs need to be. boiler with designed in low maintenance investigated and totaled. and high efficiency can provide outstanding, savings every year and maximize your boiler 2 Boiler performance. investment for today and the future, New packaged firetube boilers have much. Efficiency is only useful if it is repeatable and higher performance standards than older. sustainable over the life of the equipment design units Guaranteed high efficiency. Choosing the most efficient boiler is more than high turndown accurate and repeatable air. just choosing the vendor who is willing to meet to fuel ratio burner control programmable. a given efficiency value The burner control boiler controls automatic fuel changeover. technology must be proven to be capable of automatic excess air trim ultra low. holding the air fuel ratio year in and year out emissions technology and connectivity to. Make sure the burner design includes reliable building automation systems are available. and repeatable features How do you tell Ask on premium packaged firetube boilers The. any boiler technician who has worked on a result is automatic boiler control with lower. variety of boiler burner designs Burners with a operating costs for your facility All cost. high pressure drop design and simple robust saving reasons to consider a new packaged. linkages are easy to tune and accurately firetube boiler. hold the air to fuel ratio Burners with low, quality damper designs and complex linkage.
3 Fuel Usage, assemblies tend to be more difficult to set up. over the firing range of the boiler and tend to be If your old unit is designed to fire low grade. unable to accurately hold the air to fuel ratio as fuel oil or if you need to evaluate propane. the boiler operates or any other different fuel capability review. the conversion costs along with existing, Why choose the most efficient boiler Because. maintenance performance and efficiency, the dividends paid back each year far outweigh. issues to see if the time is right to consider, any initial cost savings of a less efficient design. a new boiler purchase Many times an, What is the most efficient boiler One that.
investment is made in an old unit when, not only starts up efficiently but continues to. the costs associated with the next major, operate efficiently year in and year out. maintenance requirement will justify a new, unit The result is wasted money on the old. Replace or Repair unit upgrade, The decision to purchase a new boiler is 4 Efficiency. typically driven by the needed replacement of, an old boiler an expansion of an existing boiler Your Cleaver Brooks representative can help.
room or construction of a new boiler room check out the efficiency of your old boiler. facility with a simple stack analysis The data will. give you a general idea of the difference, between the fuel cost of the existing boiler and similar add on devices may help pass. and a new unit Based on the results of the an initial efficiency test but will cost you. stack evaluation a more comprehensive in increased maintenance and diminishing. evaluation of your boiler room requirements performance down the road In fact you do. should be performed Boiler size load not need high maintenance boiler tube. characteristics turndown requirements add on devices if the boiler is designed. back up requirements fuel type control for optimum flue gas velocities in the. requirements and emission requirements first place Each boiler pass should be. all should be evaluated The result will be designed with a cross sectional area to. an accurate review of the potential savings achieve optimal flue gas velocity which. in fuel maintenance and boiler room in turn maximizes heat transfer while also. efficiency that can mean sub stantial cost minimizing performance robbing soot build. improvement for your facility up within the tubes When it comes to. efficiency the proof is indeed in the number, of passes and optimized boiler pass design. Efficiency Feature 2 Burner boiler compatibility, Comparisons The term packaged boiler is sometimes used. All firetube boilers are the same Not true even if a burner manufactured by one vendor. The fact is there are key feature differences is bolted on to a boiler manufac tured by. between firetube boilers a different vendor Is bolting a Buy out. burner on a vessel really a packaged boiler, The efficiency of a firetube boiler is not a And more importantly why does it matter. mysterious calculation High efficiency is A true packaged boiler burner design. the result of tangible design considerations includes a burner and boiler developed. incorporated into the boiler Reviewing some as a single unit accounting for furnace. basic design differences from one boiler to geometry radiant and convection heat. another can provide you with valuable insight transfer characteristics and verified burner. on expected efficiency performance The performance in the specific boiler package. following design issues should be considered Development as a truly packaged unit. during your boiler evaluation assures the performance of the unit is. proven and verified during development, 1 Number of boiler passes.
You can install an engine designed for, The number of boiler passes represents the one make of car into an entirely different. number of times the hot combustion gasses make of car The car will probably run and. travel across the boiler heat exchanger drive reasonable well But what about. A boiler with two passes provides two performance Will the car have the same. opportunities for the hot gasses to transfer fuel efficiency and reliability as if it had left. heat to the water in the boiler A 4 pass the factory that way Is the engine really a. design provides four opportunities for good fit for the car or will there be problems. heat transfer The stack temperature of a and headaches down the road If you need. 4 pass boiler will be lower than the stack service who do you turn to The engine. temperature of a 2 or 3 pass boiler of the manufacturer The maker of the car. same basic design operating under similar, conditions Because of this fact the 4 A boiler provides the same scenario The. pass will have higher efficiency and lower buy out burner will fire the unit however. fuel cost This is not an opinion it is basic compromises are made in the mating of the. heat exchanger physics The 4 pass design burner to the boiler affecting performance. will yield a higher overall heat transfer efficiency or both Can the burner boiler. coefficient package achieve high turndown fuel, efficiency and low emissions Who will. In an attempt to improve heat transfer guarantee the performance and who is. many boilers with fewer passes will accountable if it fails to perform The. employ after the fact add on devices burner manufacturer The maker of the. within the tubes or will be tested at less boiler Buy out burner packaging can. than full firing rate to prove lower stack result in compromised performance. temperatures Don t be fooled Turbulators higher start up costs and increased. maintenance requirements It also can evaluating a parallel position system insist. cost you money every time you have a on robust high torque actuators that are. problem and the local service people field replaceable without the need to re. F A C T S cannot get factory support You may commission the boiler to return to operation. think you saved money with a buy out Insist on easy and straightforward set up. burner package But did you really with the flexibility to achieve the optimum air. to fuel curve for your boiler at your location, serving your systems A well designed. 3 Repeatable air fuel control parallel positioning burner system with the. addition of real time combustion monitoring, The efficiency of the boiler depends on the and trim will achieve the highest level of.
ability of the burner system to provide the day to day fuel savings possible. proper air to fuel mixture throughout the, firing rate day in and day out without the The second feature to look for in burner. need for complex set up and adjustments design is the combustion air control damper. With advances in control technology Low quality register or blade type damper. consistent repeatable burner control can assemblies tend to have limited control of. now be accomplished in two different ways air at low firing conditions and also tend to. be much less repeatable than radial damper, The conventional approach to burner designs A low quality blade or register. control is commonly referred as single point damper will affect the burner in the same. positioning where a single control actuator way as a complex low quality linkage The. will drive both the fuel valve and combustion result is inconsistent burner control and the. input and energy output A typical boiler will consume many times the initial capital expense in fuel usage annually Consequently a difference of just a few percentage points in boiler efficiency between units can translate into substantial savings The efficiency data used for comparison between boilers must be

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