I have assembled an initial tag library for boiler systems and would like to find a group of people interested in participating on that topic. I will be uploading my initial work -- as soon as I learn the Project-Haystack site :)

I will be interested to contribute on the Boiler system.I can send a doc with a tag library which i think should be part of the Boiler system or may be i can add to existing library if i can get it from you.

Yes I would be happy to share the boiler tags I have assembled. Here they are as a list -- it needs to be formatted in the proper document format (Brian is going to help me with that next week!

steam hot water process steam

heat

sensible heat latent heat

pressure temperature inlet outlet entering air entering water temperature leaving leaving water temperature combustion air water enthalpy cooling water circulating pump fuel

natural gas oil #2 oil #6 oil coal biofuel renewable multi-fuel total heat reheat CO2 O2 CO excess air heat loss radiation convection sulpher carbon nitrogen hydrogen superheater efficiency combustion efficency soot ash

primary steam reheat steam desuperheater water feedwater blowdown moisture slag unburned dry losses heat balance pulverizer unburned hydrocarbons atomizing steam unburned carbon

power horsepower KW BTU efficiency

flue flue gas flue gas sensor excess air oxygen air-fuel ratio

safety blowdown feedwater exhaust condensate deaeration

water side fire side heat exchanger fouling fire tube

waste heat watse heat recovery mass flow rate flow meter oxygen trim control load range

heat wheel finned tube shell and tube heat pipe

By the way these looked all properly ordered and delimited when I typed it into the Reply screen. It got all messed up when I hit submit.

I will send it to you via email as well while waiting to learn the doc format we will use.

I have spent additional time cleaning up and organizing the initial boiler tags and have formatted them as well. Here is where things stand. Looking for input on:

Additional points Changes to suggested names Proper formatting of names (where to use caps etc.) Categorization of tags (for ease of review and explanation)

Boiler types

• steam
• hotWater
• processSteam

Heat types

• sensibleHeat
• latentHeat

Points types

• pressure
• temperature

Fuel types

• naturalGas
• oil
• #2 oil
• #6 oil
• coal
• biofuel
• renewable
• multifuel

Heat exchanger types

• heatExchanger
• heatWheel
• finnedTube
• shellTube
• heatPipe

Points

• enteringAirTemperature
• enteringAirEnthalpy
• enteringWaterTemperature
• leavingWaterTemperature
• exhaustTemperature
• massFlowrate
• flowMeter
• oxygenTrimControl (Note: a modulating control point)
• coolingWaterFlowrate
• circulatingPumpStatus
• superheaterPressure
• superheaterTemperature
• primarySteamPressure
• primarySteamTemperature
• reheatSteam
• desuperHeaterWaterPressure
• desuperHeaterWaterTemperature
• feedwaterFlowRate
• condensateFlowRate

Combustion and Emissions Elements

• CO2
• O2
• CO
• sulphur
• carbon
• nitrogen
• hydrogen
• excessAir
• unburnedHydrocarbons
• unburnedCarbon
• flueGasSensor
• excessAir
• oxygen
• airFuelRatio
• soot
• ash
• slag

Performance

• boilerEfficiency
• combustionEfficiency
• power
• horsepower
• KW
• BTU
• totalHeat
• heatLoss

Couple issues to consider:

• in AHU we used the term "return" and "discharge", and I think we should stick with that convention across the board for fluids/gases entering or exiting a piece of equipment (I deliberately avoided the term "supply" since it can get confusing based on perspective)
• in AHUs and VAVs there was just air returning/discharging from the equipment, here you have listed discharge air and water - it is one or the other? or is it both at the same time? should we include Air or Water in tag name? or stick to saying dischargeTemp is for the primary output (in a boiler or water/steam)

Here is some additional progress on the Boiler tags including proposed definitions and some simplification to address most common systems first.

Boiler types

• steam: Marker tag indicating that a boiler produces steam as an output to the load (vs hot water)
• hot water: Marker tag indicating that a boiler produces hot water as an output to the load (vs steam)
• process steam: Marker tag indicating that a boiler produces process steam as an output (vs hot water, or steam). This implies that the boiler operates at higher steam pressures than steam used for space heating.

Heat types

• sensible heat: The amount of heat energy measured solely as a function of temperature, not including phase changes, mass difference, etc.
• latent heat: The amount of heat energy including heat energy owing to phase changes mass, mass (due to moisture content or humidity), etc.

Fuel types

The following items are intended to be marker tags to describe the type of fuel that a boiler uses to generate heat.

• natural gas
• oil
• #2 oil
• #6 oil
• coal
• biofuel
• renewable
• multi-fuel

Heat exchanger types

The following items are intended to be marker tags to describe the type of heat exchanger used in a heating system.

• heat exchanger
• heat wheel
• finned tube
• shell and tube
• heat pipe

Points

• entering air temperature: The temperature of the air entering the boiler for combustion
• entering air enthalpy: The enthalpy of the air entering the boiler for combustion, typically adding the additional mass due to water vapor in the air.
• entering water temperature: The temperature of the water entering the boiler to be heated and circulated to the load. Entering water temperature may not be the same as the return temperature from the load if make up water is added.
• leaving water temperature: the temperature of the water leaving the boiler on its way to the load.
• exhaust temperature: The temperature of the exhaust after the combustion process
• mass flow rate: The measure of the mass of a substance that passes a certain point. In the case of the boiler it may be the mass of the fuel and air entering for combustion. Units will be mass divided by time.
• flow meter: A device that measures flow rate of a substance passing a certain point. HVAC systems may have flow meters for water, air, steam, condensate, etc. Units will typically be volume per minutes for air and water.
• oxygen trim control: A control loop or controller device that modulates the amount of oxygen entering the combustion process to optimize combustion for minimum pollutants and maximum efficiency.
• cooling water flow rate: Flow rate of water used for cooling -- typically of a piece of equipment versus a building load.
• circulating pump status: A point indicating the on/off status of a pump
• feedwater flow rate: The amount of feedwater added to a system to make up for losses in the system
• condensate flow rate: The amount of condensate returning after steam condenses. Usually measured in mass per time.

Combustion and Emissions Elements

• CO2
• O2
• CO
• sulphur
• carbon
• nitrogen
• hydrogen
• excess air
• unburned hydrocarbons
• unburned carbon
• flue gas sensor
• excess air
• oxygen
• air-fuel ratio
• soot
• ash
• slag

Performance

• boiler efficiency: The efficiency of the boiler system as a whole in converting fuel to heat
• combustion efficiency: The efficiency specifically of the combustion process, expressed as a percent
• power: The rating of a system (a boiler in this case) expressed as KW
• horsepower: The rating of the power of a system (a boiler in this case) expressed as horsepower.

This list seems very good and complete. Some suggested tags may also exist for other equipment. I expect that exact duplication can be removed latter in this process. One that I noticed is equipment status.

The terms entering and leaving are also used with chillers / water-water heat-pumps, etc. In fact, I think that discharge and return could lead to confusion on those systems. I would think that when pipes are involved ?!? (chillers, boilers, etc.) enteringWaterTemp or leavingWaterTemp are better choices. My 2cents ! ;-)

This thread is 2 years old but boiler and boilerPlant are still marked as TO DO in the Haystack site. I think that these can be at least partially filled in.