Lambda, λ
Lambda is related closely to excess air. Lambda is the amount of air in the combustion process related to the amount needed. A Lambda value of 1.0 would mean that exactly the theoretical quantity of air needed for complete combustion is present. Lambda is generally expressed as a number not a percentage and includes the air necessary for complete combustion. In other words, Lambda will always be in excess of unity. Lambda or λ must be carefully balanced to avoid excessive losses due to unnecessary air being heated and simply vented to the atmosphere. There is always a balancing act between Lambda and carbon monoxide content. Too much air will lead to losses and too little will lead to carbon monoxide production and incomplete combustion. Lambda is one of the major factors in adjustment of a burner system for correct combustion.
The revolutionary LambdaConstant System
New independence in condensing boiler technology
The launch of a world first: the LambdaConstant System by ebm-papst, a revolution in condensing boilers. Consisting of an intelligent ebm-papst blower and control unit, the "LambdaConstant" is the first system ever to adjust automatically to optimum combustion, always, even where variable gas types are present. And this it achieves entirely independent of the location of use and the present conditions, such as air pressure or the length of the flue gas tract.With the LambdaConstant System, our customers are opting for a new, currently one-of-a-kind technology in the heating industry - with intelligent control and equally robust components that will generate upper heating values ruggedly and reliably throughout the entire service life. See for yourself!
With optimum combustion at all times, regardless of gas type, the LambdaConstant System makes condensing boilers entirely independent of different types of gas. Up to now, devices have required time-consuming adjustment and calibration based on various types of gas. The Lambda Constant System now eliminates these tasks by adjusting automatically to the type of gas. In markets with variable gas compositions, the LambdaConstant system ensures, for the first time ever, optimum and constant combustion.
Gas blowers with the LambdaConstant System.
The actual maximum output of condensing boilers depends greatly on external conditions. For example, barometric air pressure and even the length of the flue gas tract can influence the attainable output. Here too, the LambdaConstant System ensures that the gas unit adjusts itself, thereby guaranteeing a regulated, environmentally responsible and efficient combustion from the very start.
Always energy-efficient - thanks to a one-of-a-kind degree of modulation
New condensing boiler technology with the "built-in" LambdaConstant System achieves modulation of unprecedented levels: 1:10 - compared to 1:4 using conventional technology. This vastly improves the efficiency and environmental cleanliness of the gas-fired boiler. Thanks to the high modulation range, a vast variety of output requirements - from low heat output needs to full power output for hot water supply - can be met with precision.
As easy as it is resourceful - the functionality of the LambdaConstant System
In developing the LambdaConstant System, we simply apply a researched conclusion: For every group of gas type, it is possible to represent the dependency of temperature on air mass flow with a fixed Lambda value in a diagram. This, precisely, is the basis of the LambdaConstant System. With temperature and air mass measurements, the intelligent control system electronics can detect whether the system has reached its optimum level of efficiency, and adjust to it as necessary.
In choosing the LambdaConstant System made by ebm-papst, manufacturers of gas condensing boiler heating systems are acquiring a one-of-a-kind and cost-effective technology, which will be available in mid-2007. Naturally we can adapt the control system electronics to meet the individual requirements of your applications. Contact us today about your needs and to obtain information on all of the essential details. We are glad to be of assistance.