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Short answer, total static pressure is total pressure, the terminology is just different.

The total pressure that a fan must overcome in a system is known in the HVAC community as total static pressure. This includes external static pressure and internal static pressure. External static pressure includes losses from volume control dampers, fire dampers, air outlets, duct length pressure drop (i.e. dynamic/velocity pressure drop), duct fittings, louvers, etc.

Internal static pressure includes things like filters, cooling coils, heating cools, and heat exchangers.

Short answer, total static pressure in the HVAC community often but not always includes dynamic losses from fittings and is equal to total pressure, pressure. Losses from fittings (elbows, branches, tees) is usually converted to an equivalent length of "straight duct" and then applied a friction loss. This might be why there is the terminology is just different. misnomer of total "static" pressure.

The total pressure that a fan must overcome in a system is known in the HVAC community as total static pressure. This includes external static pressure and internal static pressure. External static pressure includes losses from volume control dampers, fire dampers, air outlets, duct length pressure drop (i.e. dynamic/velocity pressure drop), friction losses), duct fittings, fittings (i.e. dynamic losses), louvers, etc.

Internal static pressure includes things like filters, cooling coils, heating cools, and heat exchangers. exchangers.

Short answer, total static pressure in the HVAC community often but not always includes dynamic losses from fittings and is equal to total pressure. Losses from fittings (elbows, branches, tees) is usually converted to an equivalent length of "straight duct" and then applied a friction loss. This might be why there is the misnomer of total "static" pressure.

The total pressure includes external static pressure and internal static pressure. External static pressure includes losses from volume control dampers, fire dampers, air outlets, duct length pressure drop (i.e. friction losses), duct fittings (i.e. dynamic losses), louvers, etc.

Internal static pressure includes things like filters, cooling coils, heating cools, and heat exchangers.

Short answer, total static pressure in the HVAC community includes dynamic losses from fittings and is equal to total pressure. Losses from fittings (elbows, branches, tees) is usually converted to an equivalent length of "straight duct" and then applied a friction loss. This might be why there is the misnomer of total "static" pressure.

The total pressure includes external static pressure and internal static pressure. External static pressure includes losses from volume control dampers, fire dampers, air outlets, duct length pressure drop (i.e. friction losses), duct fittings (i.e. dynamic losses), louvers, etc.

Internal static pressure includes things like filters, cooling coils, heating cools, and heat exchangers.

Short answer, total static pressure in the HVAC community includes dynamic losses from fittings and is equal to total pressure. Losses from fittings (elbows, branches, tees) is usually sometimes converted to an equivalent length of "straight duct" and then applied a friction loss. This might be why there is the misnomer of total "static" pressure.pressure. Otherwise the loss coefficient ("C") for a fitting is looked up in a table and multiplied by velocity pressure ("Vp") to determine the loss.

The total pressure includes external static pressure and internal static pressure. External static pressure includes losses from volume control dampers, fire dampers, air outlets, duct length pressure drop (i.e. friction losses), duct fittings (i.e. dynamic dynamic/velocity losses), louvers, etc.

Internal static pressure includes things like filters, cooling coils, heating cools, and heat exchangers.

So, you should use the "total" pressure in your numbers below, as it includes the dynamic/velocity pressure loss from fittings.

Short answer, total static pressure in the HVAC community includes dynamic losses from fittings and is equal to total pressure. Losses from fittings (elbows, branches, tees) is sometimes converted to an equivalent length of "straight duct" and then applied a friction loss. This might be why there is the misnomer of total "static" pressure. Otherwise Or the loss coefficient ("C") for a fitting is looked up in a table and multiplied by velocity pressure ("Vp") to determine the loss.

The total pressure includes external static pressure and internal static pressure. External static pressure includes losses from volume control dampers, fire dampers, air outlets, duct length pressure drop (i.e. friction losses), duct fittings (i.e. dynamic/velocity losses), louvers, etc.

Internal static pressure includes things like filters, cooling coils, heating cools, and heat exchangers.

So, you should use the "total" pressure in your numbers below, as it includes the dynamic/velocity pressure loss from fittings.