Thermostat Models

These models and simulations have been tagged “Thermostat”.

Learning exercise adapted from Donella Meadows "Thinking in Systems," Part One: Systems Structure and Behavior. The example is a single stock system (room temperature) managed by two competing goal-seeking balancing loops​, each of which is attempting to pull the stock to a different goal.
Learning exercise adapted from Donella Meadows "Thinking in Systems," Part One: Systems Structure and Behavior. The example is a single stock system (room temperature) managed by two competing goal-seeking balancing loops​, each of which is attempting to pull the stock to a different goal.
 A causal loop diagram of thermostat action including conversions between heat and temperature and outside temperature. The simulation model is at Insightmaker 393

A causal loop diagram of thermostat action including conversions between heat and temperature and outside temperature. The simulation model is at Insightmaker 393

A model of thermostat action including conversions between heat and temperature and outside temperature. See also, after this model, how the concept map of a thermostat at  IM-735  changed to the concept map at  IM-736
A model of thermostat action including conversions between heat and temperature and outside temperature. See also, after this model, how the concept map of a thermostat at IM-735 changed to the concept map at IM-736
Ahmetcem Bingöl Mehmet Nafiz Çıkıntoğlu  Tuna Erbaş
Ahmetcem Bingöl
Mehmet Nafiz Çıkıntoğlu
Tuna Erbaş
 This is a stock flow map representation From Evans RG and Stoddardt GL  1990 paper Soc Sci Med 31(12)1347-63 , also published in a book by Evans, Barer and Marmor, Why are some people healthy and others not?: The determinants of population health See  IM-425  for a simulation.

This is a stock flow map representation From Evans RG and Stoddardt GL  1990 paper Soc Sci Med 31(12)1347-63 , also published in a book by Evans, Barer and Marmor, Why are some people healthy and others not?: The determinants of population health See IM-425 for a simulation.

Learning exercise adapted from Donella Meadows "Thinking in Systems," Part One: Systems Structure and Behavior. The example is a single stock system (room temperature) managed by two competing goal-seeking balancing loops​, each of which is attempting to pull the stock to a different goal.
Learning exercise adapted from Donella Meadows "Thinking in Systems," Part One: Systems Structure and Behavior. The example is a single stock system (room temperature) managed by two competing goal-seeking balancing loops​, each of which is attempting to pull the stock to a different goal.
 Concept map about how a thermostat works. Slightly adapted from  http://cmap.ihmc.us/docs/linkingwords.html  See how this changed after SD modelling at  IM-736

Concept map about how a thermostat works. Slightly adapted from http://cmap.ihmc.us/docs/linkingwords.html See how this changed after SD modelling at IM-736

 From Evans RG and Stoddardt GL  1990 paper Soc Sci Med 31(12)1347-63 , also published in a book by Evans, Barer and Marmor, Why are some people healthy and others not?: The determinants of population health. This is a steady state model of  IM-424  that ignores deaths and population increase. This

From Evans RG and Stoddardt GL  1990 paper Soc Sci Med 31(12)1347-63 , also published in a book by Evans, Barer and Marmor, Why are some people healthy and others not?: The determinants of population health. This is a steady state model of IM-424 that ignores deaths and population increase. This is extended in IM-451

 This is the Concept map at  IM-735   modified to reflect the learning after system dynamics modeling at  IM-393 , 

This is the Concept map at IM-735  modified to reflect the learning after system dynamics modeling at IM-393

 A causal loop diagram of thermostat action  including conversions between heat and temperature and outside temperature. (Insight 394) extended to include fiddling with the thermostat controls based on differential house and outside temperatures. The simulation model is at Insightmaker 393.

A causal loop diagram of thermostat action  including conversions between heat and temperature and outside temperature. (Insight 394) extended to include fiddling with the thermostat controls based on differential house and outside temperatures. The simulation model is at Insightmaker 393.

 From Evans RG and Stoddardt GL  1990 paper Soc Sci Med 31(12)1347-63 , also published in a book by Evans, Barer and Marmor, Why are some people healthy and others not?: The determinants of population health. To  IM-425  We add impacts of spending and a "Thermostat" setting for population health con

From Evans RG and Stoddardt GL  1990 paper Soc Sci Med 31(12)1347-63 , also published in a book by Evans, Barer and Marmor, Why are some people healthy and others not?: The determinants of population health. To IM-425 We add impacts of spending and a "Thermostat" setting for population health controlling health spending.

The simplest negative feedback dynamic: a constant upper limit.  Used to explore Insightmaker options.    Note: temperature units don't work.  The simulation uses dollars to show how the relationships between units.  Removing units (making every variable unitless) is also an option.
The simplest negative feedback dynamic: a constant upper limit.  Used to explore Insightmaker options.

Note: temperature units don't work.  The simulation uses dollars to show how the relationships between units.  Removing units (making every variable unitless) is also an option.
 A rich picture representation of the interactions described in Producing Health Consuming HEalth Care and usually referred to as the EBM Model or Field Theory of Health

A rich picture representation of the interactions described in Producing Health Consuming HEalth Care and usually referred to as the EBM Model or Field Theory of Health

Learning exercise adapted from Donella Meadows "Thinking in Systems," Part One: Systems Structure and Behavior. The example is a single stock system (room temperature) managed by two competing goal-seeking balancing loops​, each of which is attempting to pull the stock to a different goal.
Learning exercise adapted from Donella Meadows "Thinking in Systems," Part One: Systems Structure and Behavior. The example is a single stock system (room temperature) managed by two competing goal-seeking balancing loops​, each of which is attempting to pull the stock to a different goal.
From the book Thinking in Systems - Donella H. Meadowns
From the book Thinking in Systems - Donella H. Meadowns
A model of thermostat action including conversions between heat and temperature and outside temperature. See also, after this model, how the concept map of a thermostat at  IM-735  changed to the concept map at  IM-736
A model of thermostat action including conversions between heat and temperature and outside temperature. See also, after this model, how the concept map of a thermostat at IM-735 changed to the concept map at IM-736
The simplest negative feedback dynamic: a constant upper limit.  Used to explore Insightmaker options.    Note: temperature units don't work.  The simulation uses dollars to show how the relationships between units.  Removing units (making every variable unitless) is also an option.     The above no
The simplest negative feedback dynamic: a constant upper limit.  Used to explore Insightmaker options.

Note: temperature units don't work.  The simulation uses dollars to show how the relationships between units.  Removing units (making every variable unitless) is also an option.

The above note is now untrue. I changed the unites of "heating rate" to "degree/minutes" and do not now get a units error.  (Paul Newton)
The simplest negative feedback dynamic: a constant upper limit.  Used to explore Insightmaker options.    Note: temperature units don't work.  The simulation uses dollars to show how the relationships between units.  Removing units (making every variable unitless) is also an option.
The simplest negative feedback dynamic: a constant upper limit.  Used to explore Insightmaker options.

Note: temperature units don't work.  The simulation uses dollars to show how the relationships between units.  Removing units (making every variable unitless) is also an option.
 From Evans RG and Stoddardt GL  1990 paper Soc Sci Med 31(12)1347-63 , also published in a book by Evans, Barer and Marmor, Why are some people healthy and others not?: The determinants of population health. This is a steady state model of  IM-424  that ignores deaths and population increase. This

From Evans RG and Stoddardt GL  1990 paper Soc Sci Med 31(12)1347-63 , also published in a book by Evans, Barer and Marmor, Why are some people healthy and others not?: The determinants of population health. This is a steady state model of IM-424 that ignores deaths and population increase. This is extended in IM-451

Learning exercise adapted from Donella Meadows "Thinking in Systems," Part One: Systems Structure and Behavior. The example is a single stock system (room temperature) managed by two competing goal-seeking balancing loops​, each of which is attempting to pull the stock to a different goal.
Learning exercise adapted from Donella Meadows "Thinking in Systems," Part One: Systems Structure and Behavior. The example is a single stock system (room temperature) managed by two competing goal-seeking balancing loops​, each of which is attempting to pull the stock to a different goal.
 From Evans RG and Stoddardt GL  1990 paper Soc Sci Med 31(12)1347-63 , also published in a book by Evans, Barer and Marmor, Why are some people healthy and others not?: The determinants of population health. To  IM-425  We add impacts of spending and a "Thermostat" setting for population health con

From Evans RG and Stoddardt GL  1990 paper Soc Sci Med 31(12)1347-63 , also published in a book by Evans, Barer and Marmor, Why are some people healthy and others not?: The determinants of population health. To IM-425 We add impacts of spending and a "Thermostat" setting for population health controlling health spending.

Learning exercise adapted from Donella Meadows "Thinking in Systems," Part One: Systems Structure and Behavior. The example is a single stock system (room temperature) managed by two competing goal-seeking balancing loops​, each of which is attempting to pull the stock to a different goal.
Learning exercise adapted from Donella Meadows "Thinking in Systems," Part One: Systems Structure and Behavior. The example is a single stock system (room temperature) managed by two competing goal-seeking balancing loops​, each of which is attempting to pull the stock to a different goal.