/** Water heater synchronization determines the time to next
synchronization state and the power drawn since last synch
**/
TIMESTAMP waterheater::sync(TIMESTAMP t0, TIMESTAMP t1)
{
double internal_gain = 0.0;
double nHours = (gl_tohours(t1) - gl_tohours(t0))/TS_SECOND;
double Tamb = get_Tambient(location);
// use re_override to control heat_needed state
// runs after thermostat() but before "the usual" calculations
if(re_override == OV_ON){
heat_needed = TRUE;
} else if(re_override == OV_OFF){
heat_needed = FALSE;
}
if(Tw > 212.0 - thermostat_deadband){ // if it's trying boil, turn it off!
heat_needed = FALSE;
is_waterheater_on = 0;
}
TIMESTAMP t2 = residential_enduse::sync(t0,t1);
// Now find our current temperatures and boundary height...
// And compute the time to the next transition...
//Adjusted because shapers go on sync, not presync
set_time_to_transition();
// determine internal gains
if (location == INSIDE){
if(this->current_model == ONENODE){
internal_gain = tank_UA * (Tw - get_Tambient(location));
} else if(this->current_model == TWONODE){
internal_gain = tank_UA * (Tw - Tamb) * h / height;
internal_gain += tank_UA * (Tlower - Tamb) * (1 - h / height);
}
} else {
internal_gain = 0;
}
// determine the power used
if (heat_needed == TRUE){
/* power_kw */ load.total = (heat_mode == GASHEAT ? gas_fan_power : heating_element_capacity);
is_waterheater_on = 1;
} else {
/* power_kw */ load.total = (heat_mode == GASHEAT ? gas_standby_power : 0.0);
is_waterheater_on = 0;
}
//load.total = load.power = /* power_kw */ load.power;
load.power = load.total * load.power_fraction;
load.admittance = load.total * load.impedance_fraction;
load.current = load.total * load.current_fraction;
load.heatgain = internal_gain;
waterheater_actual_power = load.power + (load.current + load.admittance * load.voltage_factor )* load.voltage_factor;
actual_load = waterheater_actual_power.Re();
if (actual_load != 0.0)
{
prev_load = actual_load;
power_state = PS_ON;
}
else
power_state = PS_OFF;
// gl_enduse_sync(&(residential_enduse::load),t1);
if(re_override == OV_NORMAL){
if (time_to_transition >= (1.0/3600.0)) // 0.0167 represents one second
{
TIMESTAMP t_to_trans = (TIMESTAMP)(t1+time_to_transition*3600.0/TS_SECOND);
return -(t_to_trans); // negative means soft transition
}
// less than one second means never
else
return TS_NEVER;
} else {
return TS_NEVER; // keep running until the forced state ends
}
}
/** oven synchronization determines the time to next
synchronization state and the power drawn since last synch
**/
TIMESTAMP range::sync(TIMESTAMP t0, TIMESTAMP t1)
{
double internal_gain = 0.0;
double nHours = (gl_tohours(t1) - gl_tohours(t0))/TS_SECOND;
double Tamb = get_Tambient(location);
double dt = gl_toseconds(t0>0?t1-t0:0);
if (oven_check == true || remainon == true)
time_oven_operation +=dt;
if (remainon == false)
time_oven_operation=0;
enduse_queue_oven += enduse_demand_oven * dt/3600/24;
if (t0>TS_ZERO && t1>t0)
{
// compute the total energy usage in this interval
load.energy += load.total * dt/3600.0;
}
if(re_override == OV_ON){
heat_needed = TRUE;
} else if(re_override == OV_OFF){
heat_needed = FALSE;
}
if(Tw > 212.0 - thermostat_deadband){ // if it's trying boil, turn it off!
heat_needed = FALSE;
is_range_on = 0;
}
// determine the power used
if (heat_needed == TRUE){
/* power_kw */ load.total = heating_element_capacity * (heat_mode == GASHEAT ? 0.01 : 1.0);
is_range_on = 1;
} else {
/* power_kw */ load.total = 0.0;
is_range_on = 0;
}
TIMESTAMP t2 = residential_enduse::sync(t0,t1);
set_time_to_transition();
if (location == INSIDE){
if(this->current_model == ONENODE){
internal_gain = oven_UA * (Tw - get_Tambient(location));
}
} else {
internal_gain = 0;
}
dt = update_state(dt, t1);
//load.total = load.power = /* power_kw */ load.power;
load.power = load.total * load.power_fraction;
load.admittance = load.total * load.impedance_fraction;
load.current = load.total * load.current_fraction;
load.heatgain = internal_gain;
range_actual_power = load.power + (load.current + load.admittance * load.voltage_factor )* load.voltage_factor;
actual_load = range_actual_power.Re();
if (heat_needed == true)
total_power_oven = actual_load;
else
total_power_oven =0;
if (actual_load != 0.0)
{
prev_load = actual_load;
power_state = PS_ON;
}
else
power_state = PS_OFF;
// gl_enduse_sync(&(residential_enduse::load),t1);
if(re_override == OV_NORMAL){
if (time_to_transition < dt)
{
if (time_to_transition >= (1.0/3600.0)) // 0.0167 represents one second
{
TIMESTAMP t_to_trans = (t1+time_to_transition*3600.0/TS_SECOND);
return -(t_to_trans); // negative means soft transition
}
// less than one second means never
else
return TS_NEVER;
}
else
return (TIMESTAMP)(t1+dt);
} else {
return TS_NEVER; // keep running until the forced state ends
}
}
