**Figure 1.**
Photos of supply devices and nozzles, SJ, HMCJ, LMCJ, and LMCJ-M.

**Figure 1.**
Photos of supply devices and nozzles, SJ, HMCJ, LMCJ, and LMCJ-M.

**Figure 2.**
Set-up of measurement points and mannequins. (**Top**) Measurement points and placements of SJ and confluent jet devices, red mannequins were turned on for the 10 p (persons) cases, red and blue were turned on for 19 p cases and red, blue and yellow were turned on for the 28 p cases. (**Bottom**) Photo of set-up.

**Figure 2.**
Set-up of measurement points and mannequins. (**Top**) Measurement points and placements of SJ and confluent jet devices, red mannequins were turned on for the 10 p (persons) cases, red and blue were turned on for 19 p cases and red, blue and yellow were turned on for the 28 p cases. (**Bottom**) Photo of set-up.

**Figure 3.**
Air distribution pattern from supply devices. (**Left**) HMCJ and LMCJ, (**Right**) LMCJ-M.

**Figure 3.**
Air distribution pattern from supply devices. (**Left**) HMCJ and LMCJ, (**Right**) LMCJ-M.

**Figure 4.**
Velocity at points A–F for all cases and the supply devices @ □ = 0.1 m, ○ = 0.6 m, ◊ = 1.1 m, ∆ = 1.7 m and ---- = mean. Note: the mean does not represent a gradient, it is only a comparison between points.

**Figure 4.**
Velocity at points A–F for all cases and the supply devices @ □ = 0.1 m, ○ = 0.6 m, ◊ = 1.1 m, ∆ = 1.7 m and ---- = mean. Note: the mean does not represent a gradient, it is only a comparison between points.

**Figure 5.**
Local heat removal effectiveness at Points A–F for all cases and supply devices @ □ = 0.1 m, ○ = 0.6 m, ◊ = 1.1 m, ∆ = 1.7 m and ---- = mean. Note: the mean does not represent a gradient, it is only a comparison between points.

**Figure 5.**
Local heat removal effectiveness at Points A–F for all cases and supply devices @ □ = 0.1 m, ○ = 0.6 m, ◊ = 1.1 m, ∆ = 1.7 m and ---- = mean. Note: the mean does not represent a gradient, it is only a comparison between points.

**Figure 6.**
Temperature at Points A–F for all cases and supply devices @ □ = 0.1 m, ○ = 0.6 m, ◊ = 1.1 m, ∆ = 1.7 m and ---- = mean. Note: the mean does not represent a gradient, it is only a comparison between points.

**Figure 6.**
Temperature at Points A–F for all cases and supply devices @ □ = 0.1 m, ○ = 0.6 m, ◊ = 1.1 m, ∆ = 1.7 m and ---- = mean. Note: the mean does not represent a gradient, it is only a comparison between points.

**Figure 7.**
Air change effectiveness at Points A–D, F for all cases and supply devices @ height 1.1 m, ○ = LMCJ, ◊ = HMCJ, ∆ = SJ. Note: the lines does not represent a gradient, it is only a comparison between points.

**Figure 7.**
Air change effectiveness at Points A–D, F for all cases and supply devices @ height 1.1 m, ○ = LMCJ, ◊ = HMCJ, ∆ = SJ. Note: the lines does not represent a gradient, it is only a comparison between points.

**Figure 8.**
Draft rating at points A–F for all cases and supply devices @ □ = 0.1 m, ○ = 0.6 m, ◊ = 1.1 m, ∆ = 1.7 m and ---- = mean. Note: the mean does not represent a gradient, it is only a comparison between points.

**Figure 8.**
Draft rating at points A–F for all cases and supply devices @ □ = 0.1 m, ○ = 0.6 m, ◊ = 1.1 m, ∆ = 1.7 m and ---- = mean. Note: the mean does not represent a gradient, it is only a comparison between points.

**Figure 9.**
Thermal comfort at points A–F for all cases and supply devices @ □ = 0.1 m, ○ = 0.6 m, ◊ = 1.1 m, ∆ = 1.7 m, ––– = Thermal comfort for standing person, ––– = Thermal comfort for seated person, - - - - = Limits for class B ISO–773, - - - - = Limits for class A ISO-7730, RH = 35%, CLO = 0.9, and MET = 1.1.

**Figure 9.**
Thermal comfort at points A–F for all cases and supply devices @ □ = 0.1 m, ○ = 0.6 m, ◊ = 1.1 m, ∆ = 1.7 m, ––– = Thermal comfort for standing person, ––– = Thermal comfort for seated person, - - - - = Limits for class B ISO–773, - - - - = Limits for class A ISO-7730, RH = 35%, CLO = 0.9, and MET = 1.1.

**Figure 10.**
Velocity, LHRE and temperature at points A–F for LMCJ and LMCJ-M @ □ = 0.1 m, ○ = 0.6 m, ◊ = 1.1 m, ∆ = 1.7 m and ---- = mean. Note: the mean does not represent a gradient, it is only a comparison between points.

**Figure 10.**
Velocity, LHRE and temperature at points A–F for LMCJ and LMCJ-M @ □ = 0.1 m, ○ = 0.6 m, ◊ = 1.1 m, ∆ = 1.7 m and ---- = mean. Note: the mean does not represent a gradient, it is only a comparison between points.

**Figure 11.**
ACE at points A–D, F for LMCJ and LMCJ-M @ height 1.1 m, ○ = LMCJ, □ = LMCJ-M. Note: the lines does not represent a gradient, it is only a comparison between points.

**Figure 11.**
ACE at points A–D, F for LMCJ and LMCJ-M @ height 1.1 m, ○ = LMCJ, □ = LMCJ-M. Note: the lines does not represent a gradient, it is only a comparison between points.

**Figure 12.**
Thermal comfort (PMV and DR) at points A–F for LMCJ and LMCJ-M @ □ = 0.1 m, ○ = 0.6 m, ◊ = 1.1 m, ∆ = 1.7 m, –––– = thermal Comfort for standing person, –––– = thermal comfort for seated person. - - - - = limits for class B ISO–773, - - - - = limits for class A ISO-7730, RH = 35%, CLO = 0.9, and MET = 1.1. Note: the lines/mean does not represent a gradient, it is only a comparison between points.

**Figure 12.**
Thermal comfort (PMV and DR) at points A–F for LMCJ and LMCJ-M @ □ = 0.1 m, ○ = 0.6 m, ◊ = 1.1 m, ∆ = 1.7 m, –––– = thermal Comfort for standing person, –––– = thermal comfort for seated person. - - - - = limits for class B ISO–773, - - - - = limits for class A ISO-7730, RH = 35%, CLO = 0.9, and MET = 1.1. Note: the lines/mean does not represent a gradient, it is only a comparison between points.

**Figure 13.**
Temperature (°C) (**left**) and velocity (m/s) (**right**) Case 5 at 1.1 m above the floor for LMCJ (light) ▪A,▪B,▪C,▪E,▪D and ▪F and the LMCJ-M (dark) ▪A, ▪B,▪C, ▪E, ▪D and ▪F.

**Figure 13.**
Temperature (°C) (**left**) and velocity (m/s) (**right**) Case 5 at 1.1 m above the floor for LMCJ (light) ▪A,▪B,▪C,▪E,▪D and ▪F and the LMCJ-M (dark) ▪A, ▪B,▪C, ▪E, ▪D and ▪F.

**Figure 14.**
Normalized vertical temperature gradients for all cases. ^{______} = A, ^{______} = B, ^{__ __ __}= C, ^{__ __ __}= D, ^{__ __ __}= E, ^{_ _ _} = F.

**Figure 14.**
Normalized vertical temperature gradients for all cases. ^{______} = A, ^{______} = B, ^{__ __ __}= C, ^{__ __ __}= D, ^{__ __ __}= E, ^{_ _ _} = F.

**Table 1.**
Technical specifications of the supply devices.

**Table 1.**
Technical specifications of the supply devices.

| SJ | HMCJ | LMCJ | LMCJ-M |
---|

Length of channel | - | 2 × 4 m | 2 × 4 m | 2 × 4 m |

Diameter of channel [m] | - | 0.250 | 0.250 | 0.250 |

Number of Nozzles | 4 (slots) | 2 × 1152 | 2 × 228 | 399 * |

Diameter of Nozzles [m] | 4 × 0.6 × 0.02 | 0.005 | 0.028 | 0.028 ** |

Total Inlet Area [m^{2}] | 0.18 | 0.05 | 0.28 | 0.14 |

Inlet Velocities [m/s] | ~0.6–1.6 | ~2.2–6.3 | ~0.4–1.0 | ~0.7–2.0 |

**Table 2.**
Case set-up.

Cases | Mannequins | Airflow Rate (L/s) | Heat Load (W/m^{2}) | ACH (-) |
---|

Case 1–18 °C-15 L/(s⋅p)-10 p | 10 | 150 | 17 | 3.3 |

Case 2–18 °C-15 L/(s⋅p)-19 p | 19 | 285 | 32 | 6.3 |

Case 3–16 °C-10 L/(s⋅p)-10 p | 10 | 100 | 17 | 2.2 |

Case 4–16 °C-10 L/(s⋅p)-19 p | 19 | 190 | 32 | 4.2 |

Case 5–16 °C-10 L/(s⋅p)-28 p | 28 | 280 | 47 | 6.2 |

**Table 3.**
Nominal inlet velocity for all supply devices [m/s].

**Table 3.**
Nominal inlet velocity for all supply devices [m/s].

Cases | SJ | HMCJ | LMCJ | LMCJ-M |
---|

Case 1–18 °C-15 L/(s⋅p)-10 p | 0.83 | 3.32 | 0.54 | 1.07 |

Case 2–18 °C-15 L/(s⋅p)-19 p | 1.58 | 6.30 | 1.02 | 2.03 |

Case 3–16 °C-10 L/(s⋅p)-10 p | 0.55 | 2.22 | 0.36 | 0.72 |

Case 4–16 °C-10 L/(s⋅p)-19 p | 1.06 | 4.20 | 0.68 | 1.43 |

Case 5–16 °C-10 L/(s⋅p)-28 p | 1.55 | 6.20 | 1.00 | 1.99 |

**Table 4.**
Average HRE, ACE and ADPI for SJ, HMCJ and LMCJ supply devices.

**Table 4.**
Average HRE, ACE and ADPI for SJ, HMCJ and LMCJ supply devices.

| Case 1 | Case 2 | Case 3 | Case 4 | Case 5 | Avg. |
---|

**HRE** |

SJ | 89% | 83% | 100% | 87% | 87% | 89% |

HMCJ | 101% | 96% | 101% | 101% | 95% | 99% |

LMCJ | 99% | 99% | 100% | 100% | 99% | 99% |

**ACE** |

SJ | 95% | 94% | 98% | 90% | 93% | 94% |

HMCJ | 102% | 98% | 106% | 107% | 106% | 104% |

LMCJ | 109% | 107% | 110% | 109% | 108% | 109% |

**ADPI** |

SJ | 96% | 100% | 88% | 100% | 96% | 96% |

HMCJ | 92% | 96% | 88% | 92% | 92% | 90% |

LMCJ | 92% | 96% | 88% | 88% | 96% | 91% |

**Table 5.**
Average HRE, ACE and ADPI for LMCJ and LMCJ-M supply devices.

**Table 5.**
Average HRE, ACE and ADPI for LMCJ and LMCJ-M supply devices.

| Case 1 | Case 2 | Case 3 | Case 4 | Case 5 | Avg. |
---|

**HRE** |

LMCJ | 99% | 99% | 100% | 100% | 99% | 99% |

LMCJ-M | 104% | 109% | 103% | 105% | 108% | 106% |

**ACE** |

LMCJ | 109% | 107% | 110% | 109% | 108% | 109% |

LMCJ-M | 108% | 109% | 105% | 112% | 110% | 109% |

**ADPI** |

LMCJ | 92% | 96% | 88% | 88% | 96% | 91% |

LMCJ-M | 88% | 96% | 88% | 92% | 92% | 91% |